ZXTape! 0Created with Ramsoft MakeTZXPHYSICS 1 tt{v C0:7:7::4,7;"H O M E S T U D Y" /10 ,3;"G.C.E. 'O' LEVEL PHYSICS" *12 ,5;"A.E.B. SYLLABUS 052." ('14,7;"PAPER I REVISION" 2C19,7;" HOMESTUDY LTD."''" M.J.Rickards, M.Sc." <6,13 ;"1983" P0,0:7:"" Z"PHYSICS 1"1 PHYSICS 1 yy{{ A0:0:0:0:5:5:0: 5,8;" P H Y S I C S "''15;"1";11 ,1;"THIS PROGRAM TAKES ABOUT THREE "''" MINUTES TO LOAD COMPLETELY" Y2:255,0:0,175:-255,0:0,-175 2*5:5:0,0:"" <"PHYSICS 1"1 6PANEL 1 >>f'@ 0:5:5::3,12 ;"PAPER I";''9 ;"REVISION TEST";10 ,1;"YOU ARE NOT PERMITTED THE USE OF AN ELECTRONIC CALCULATOR OR ANY AID TO HELP WITH NUMERICAL CALCULATIONS."''" USE SPARE PAPER FOR ROUGH WORK IF NECESSARY." 5:5:"" <"PANEL 1"1 ^PHYSICS 1 #͋u%:BX=8000@ 2:255,0:0,175:-255,0:0,-175:10 ,3;" S T O P T H E T A P E ";13 ,4;"PRESS ANY KEY TO GO ON" #.5,32 :""20  10 7:7:0::2,7;"PAPER I REVISION";6;"(MULTIPLE CHOICE)";5,0;"EACH QUESTION WILL OFFER FIVE ALTERNATIVE ANWERS. ONLY ONE OFTHEM IS CORRECT."::"A CORRECT REPLY LEADS DIRECTLY TO THE NEXT QUESTION."::"AN INCORRECT REPLY IS REPORTED IMMEDIATELY, THE CORRECT ANSWER IS INDICATED AND AN EXPLANATION FOLLOWS. THE QUESTION CAN THEN BE REVIEWED FOLLOWED BY ANOTHER LOOK AT THE EXPLANATION.":20,0;"PRESS 'ENTER'.":0 u:,,,," TO ANSWER THE QUESTIONS:",,," 1. PRESS THE LETTER FOR THE ANSWER YOU CHOOSE.",,," 2. PRESS 'ENTER'." #J:::"YOU CAN CHANGE YOUR ANSWER BY USING 'DELETE' IN THE USUAL WAY." (:20,1;"NOW PRESS 'ENTER' TO START.":0 2:N$="2514325143":M$="123321":A$="A. B. C. D. E. ":B$="1. 2. 3. "::S(22):N(22):Q=1:"QUESTION 1."::ANS=0 J=13 :"WHICH RADIATION HAS THE GREATESTFREQUENCY?":S1  "LIGHT":  "RADAR": "RADIO WAVES": "ULTRASOUND": "1000000 Hz": J=10 :U$=" J/(kgK)":JU=(*9000(#+1000):WT=.01z# =*(*200+100d):TEM=.1}L*(10 *JU/385/WT) "THE TEMPERATURE OF A ";WT;" kg","BLOCK OF COPPER WAS RAISED BY",TEM;"C WITH THE APPLICATION OF",JU;" J OF HEAT."''"CALCULATE THE SPECIFIC THERMAL CAPACITY OF COPPER.":S1 385;U$:  JU;U$: !!.1}L*(JU/WT*10 );U$: "1257;U$: #TEM*100d;U$: $"A CANNON BALL AND A WOODEN BALL OF THE SAME SIZE BOTH FALL FROM A HEIGHT OF 17 m. WHICH OF THE FOLLOWING IS THE MOST PROBABLE RESULT?":J=3:S1 )/"BOTH REACH ABOUT THE SAME VELOCITY.": *3"THE WOODEN BALL GETS GREATER ACCELERATION.": +""THE CANNON BALL LANDS FIRST.": ,:"THE FINAL SPEED IS IN THE RATIO OF THE MASSES.": -:"THE ACCELERATIONS ARE IN THE RATIO OF THE MASSES.": .TM=(*7+3):"THE CREW OF A TUG, CLOSE TO A CLIFF DURING A FOG, HEARD THE ECHO OF THE SIREN ";TM;" s AFTER ITS BLAST.",,,,"IF THE SPEED OF SOUND IS 342 m/sIN FOG, HOW FAR IS THE TUG FROM THE CLIFF?" 2J=12 :U$=" m":S1 3171*TM;U$: 4342V*TM;U$: 5(342V/TM);U$: 6(684/TM);U$: 76740T;U$: 8"A COPPER AND A WOODEN BLOCK,BOTHTHE SAME SIZE, ARE AT 40C. TO THE TOUCH, THE COPPER BLOCK FEELS WARMER THAN THE WOODEN ONEBECAUSE:" <J=10 :S1 =9"METALS HAVE GREATER THERMAL CAPACITY THAN WOOD.": >#"METALS COOL FASTER THAN WOOD.": ?!"COPPER IS DENSER THAN WOOD.": @!"WOOD IS SOFTER THAN COPPER.": A/"WOOD IS DULL WHEREAS COPPER IS SHINY.": B."FORCE IS DEFINED AS THE RATE OF CHANGE OF:" FJ=3:S1 G"MOMENTUM.": H "WORK.": I "ENERGY.": J"VELOCITY.": K "POWER.": L5"THE EQUIVALENT RESISTANCE OF THENETWORK SHOWN IS:" MU$=" ":RA=2*(*4+1):RB=.1}L*(10 /(.75@-1/RA)):RC=(*5+4):7,21;RA;U$;9 ,14;RC;U$;11 ,20;RB;U$ N95_,99c:8,0:BX:8,0:0,16:8,0:BX:8,0:0,-16:151,99c:0,-16:8,0:BX:8,0:0,16:8,0 PJ=16:S1 QRD=RC+1.33*=p:RD;U$: R9.37;U$: S RC+RA;U$: TRC+5.28(;U$: U2*RC;U$: VP"WHICH MIRROR MUST FORM A VIRTUALIMAGE OF ANY OBJECT PLACED IN FRONT OF IT?" ZJ=14:S1 ["A PLANE MIRROR.": \"A CONVERGING MIRROR.": ]"A CYLINDRICAL MIRROR.": ^"A CONCAVE MIRROR.": _"A PARABOLIC MIRROR.": `WT=(*900+100d):NU=.28\(*WT:"A SOLID BODY WEIGHING ";WT;" N IS COMPLETELY IMMERSED IN A LIQUID WHICH PRODUCES AN UPTHRUST OF",NU;" N." b>:"WHAT IS THE APPARENT WEIGHT OF THE SOLID IN THE LIQUID?" dU$=" N":J=6:S1 e.728Q*WT;U$: f NU;U$: g.5*(WT+NU);U$: h (WT/NU);U$: i106j;U$: ji"WHICH OF THE FOLLOWING EMISSIONSWILL CHANGE THE ATOMIC NUMBER BUT NOT THE MASS NUMBER OF AN ATOM?" nJ=21:S1 o"BETA PARTICLES.": p"ALPHA PARTICLES.": q"GAMMA RAYS.": r"NEUTRONS.": s"PROTONS.": t"A MASS HANGING FROM A SPRING IS MADE TO OSCILLATE VERTICALLY.","DURING AN OSCILLATION, AT WHICH POINT DOES THE SPRING HOLD LEASTENERGY?" xJ=5:S1 y"THE TOP OF A CYCLE.": z"THE MIDDLE OF THE CYCLE.": {"THE BOTTOM OF THE CYCLE.": |"A QUARTER OF THE WAY UP.": } "A QUARTER OF THE WAY DOWN.": ~K"WHICH ACTION WILL REMOVE ALL THEMAGNETISM FROM A PERMANENT STEELMAGNET?" J=17:S1 "HEATING ABOVE 800C.": "HAMMERING IT.": "BENDING IT INTO A CIRCLE.": "CUTTING IT IN HALF.": "COOLING IT BELOW -273C.": "THE EXPANSIVITY OF STEEL IS LESSTHAN THAT OF COPPER. BIMETALLIC STRIPS MADE WITH COPPER ON TOP OF STEEL, WHEN HEATED, WILL:" J=9 :S1 "BEND DOWNWARDS.": "WRINKLE.": "REMAIN UNCHANGED.": "BEND UPWARDS.": "CONTRACT THE COPPER PART.": 0"IN AN ELECTROMAGNET AN IRON COREIS USED TO:" J=18:S1  "CONCENTRATE THE MAGNETISM.": "MAKE IT HEAVIER.": "MAKE IT STRONGER.": !"HOLD IT DURING MANUFACTURE.": #"HOLD THE ELECTRICAL WINDINGS.": PER=10 *(*10 +90Z):"A BLOCK OF PERSPEX FLOATS WITH ";PER/10 ;"% OF ITS VOLUME UNDER WATER. GIVEN THAT THE DENSITY OF WATER IS 1000 kg/m WHAT DENSITY DOES PERSPEX HAVE?" J=6:U$=" kg/m":s1  PER;U$: (10000'/PER);U$: 1000-PER;U$: 870f;U$: PER*10 ;U$: "SMOKE PARTICLES IN AIR, VIEWED WITH A POWERFUL MICROSCOPE, ARE SEEN TO MOVE CEASELESSLY IN ALL DIRECTIONS (BROWNIAN MOTION)." 9:"RAISING THE TEMPERATURE WILL HAVE THE EFFECT OF:" J=2:S1 "INCREASING THE MOVEMENT.": "REDUCING THE MOVEMENT.": "SHOWING MORE PARTICLES.": !"MAKING THE PARTICLES FEWER.":  "EVAPORATING THE PARTICLES.": ="WHAT IS THE VELOCITY RATIO OF THE PULLEY SYSTEM SHOWN?"  9000(# J=4:S1  4:  3:  5:  6:  8: q"THE VALUE FOR THE ACCELERATION DUE TO GRAVITY CAN BE FOUND BY TIMING THE FALL OF A BODY FOR A HEIGHT ""h""." F:"WHICH OF THE FOLLOWING EQUATIONSIS SUITABLE FOR THE CALCULATION?" J=3:S1 "g = 2*h/t": "g = h/t":  "g = h/t": "g = 2*h/t": "g = ht": _"WHICH ARE THE PARTICLES CARRYINGTHE ELECTRIC CHARGE WHEN A METALIS CONDUCTING ELECTRICITY?" J=20:S1 "ELECTRONS": "NEUTRONS":  "PROTONS": "POSITRONS": "ALPHA PARTICLES.": A"WHEN WATER CHANGES TO STEAM ON BOILING, THE WATER MOLECULES:" J=2:S1 "MOVE FREELY IN SPACE.": +"REMAIN IN GROUPS BUT VIBRATE MORE.": "LOSE KINETIC ENERGY.": #"BECOME GASEOUS BUT SLOW DOWN.": "INCREASE THE PRESSURE.": LN=(*7+3):("A "ln8);("AN "LN=8);LN;" m LONG TUBE, CLOSED AT ONE"'"END, IS MADE TO RESONATE AT ITS FUNDAMENTAL TONE. WHAT IS THE RESONANT FREQUENCY IF THE SPEED OF SOUND IS 330 m/s?" J=12 :U$=" Hz":S1 .1}L*(852T/LN);U$: (330J/LN);U$: 330J*LN;U$: !(LN/330J*1000);U$: 100d;U$: A"THE ELECTROSTATIC CAPACITY OF A CONDUCTING SPHERE DEPENDS ON:" J=20:S1 "ITS DIAMETER.": "ITS MASS.": "ITS SURFACE POLISH.": "THE METAL.": "ITS INSULATION.": V$=" ":U$=" V":RA=(*8+2):RB=(*8+2):RC=(*8+2):"WHAT IS THE POTENTIAL ACROSS THERESISTANCE Rx?" 6,16;"<";22;">":132,123{:480,0:6,18;"12V";7,24;RA;V$;11 ,18;RC;V$;24;RB;V$ 131,115s:568,0:BX:8,0:0,-32 :131,115s:0,-32 :8,0:BX:8,0:BX:8,0:7,19;"" #J=16:6,0;:S1 3Rx=.1}L*(120x*RC/(RA+RB+RC)):Rx;U$: 12 -RA;U$: (12 /RC);U$: RA+RB+RC;U$: 12 ;U$: Y"AT WHICH POINT ON THE COOLING CURVE SHOWN IS THE RATE OF LOSSOF HEAT AT A MINIMUM?"  9100# J=10 :S2 16,27;: 5,2;: 8,5;: 11 ,12 ;: 14,20;: V"WHICH POINT WILL BE REACHED BY THE RESULTANT FROM 'O' OF THE TWO VECTORS SHOWN?" 9200#:J=4:S2  19-VY,13 +VH+VX;:  19-VY,10 +VH+VX;: 22-VY,8+VH+VX;: VY,8+VH+VX;:  20-VY,6+VH+VX;:  WT=60<*(*2+1):AM=(*6+2):NU=240*AM/WT:"HOW MANY ";WT;" W ELECTRIC LIGHT","BULBS MUST BE CONNECTED IN","PARALLEL ACROSS A 240 V MAIN TO MAKE A TOTAL CURRENT OF ";AM;" A?" J=16:S1 NU:  (NU/2): 2*NU: WT: 240/WT: WT=60<*(*2+1):TM=(*20+10 ):"WHAT IS THE COST OF RUNNING A",WT;" W BULB FOR ";TM;" HOURS AT 5.5 p"'"PER UNIT?" J=19:S1 TM*WT*.0055y49X;" p": TM*5.50;" p": WT*5.50;" p": TM*WT*5.50;" p": (WT/TM*5.50);" p": 9300T$:"WHICH TWO PURE COLOURS MUST BE MIXED ADDITIVELY SO AS TO OBTAIN";("CYAN"E=1);("MAGENTA"E=3);("YELLOW"E=2);"?" "J=14:S1 #H$;"";G$;".": $"PURPLEGREEN.": %"ORANGEBLUE.": &"VIOLETRED.": '"VIOLETPURPLE.": (;"THE POLES OF AN ELECTROMAGNET CAN BE CHANGED OVER BY:" ,J=18:S1 -."CHANGING THE DIRECTION OF THE CURRENT.": ."USING A RECTIFIER.": /"TURNING THE CORE ROUND.": 0"INCREASING THE CURRENT.": 1"USING AN INDUCTOR.": 2)"SHORTSIGHTEDNESS IS CORRECTED WITH:" 6J=14:S4 7""DIVERGING LENSES.":K=1: 8"CONVERGING LENSES.": 9"BIFOCAL LENSES.": K=1:"A NEUTRAL POINT IS CREATED BETWEEN THEM.": Fj"""HOT LIQUIDS IN A THERMOS FLASK WILL KEEP HOT LONGER.""","HERE THE LOSS OF HEAT IS MAINLY REDUCED BY:" JJ=8:S4 K<K=1:"REDUCING AIR CONDUCTION AND CONVECTION.": L"USING THICK GLASS.": M"REDUCING RADIATION.": PLN=.1}L*(*29+71G):EX=25*10 ^(-6)*60<*LN:"A ROD OF ALUMINIUM ";LN;" m LONG AT0C EXPANDS BY ";EX;" m WHEN","HEATED TO 60C. WHICH OF THE","FOLLOWING STATEMENTS IS CORRECT?" TJ=9 :S4 UA"THE EXPANSIVITY OF ALUMINIUM IS 25*10^(-6) /K":K=1: VB"THERMAL EXPANSION PRODUCES A VERY LARGE FORCE.":K=1: XW"THE EXPANSIVITY OF ALUMINIUM IS UNUSUALLY LOW BECAUSE IT IS A LIGHT METAL.": Z,"WHEN GASES MIX BY DIFFUSION THEYDO THIS:" ^J=2:S4 _K=1:"UNDISTURBED.": `-K=1:"BY MOLECULAR MOVEMENT ALONE.": a "WITH THE FORCE OF GRAVITY.": da"A LIQUID FILLS A GLASS FLASK TO THE BRIM. ON HEATING THE FLASK THE LIQUID OVERFLOWS BECAUSE:" hJ=9 :S4 i;K=1:"THE LIQUID EXPANDS MORE THAN THE FLASK.": j"THE LIQUID EXPANDS.": k-"THERE ARE IMPURITIES IN THE LIQUID.": n"CRYSTALS OF PURE SUBSTANCES CAN ALWAYS BE SEEN TO HAVE STRAIGHT EDGES AND REGULAR ANGLES. THIS SUGGESTS THAT THE PARTICLES THATMAKE UP THE SUBSTANCE:" rJ=2:S4 s)K=1:"ALL HAVE THE SAME SHAPE.": t(K=1:"ALL HAVE THE SAME SIZE.": u"ARE VERY SMALL.": x="A TOTAL ECLIPSE OF THE SUN CAN ONLY BE SEEN ON EARTH IF:" |J=14:S4 }=K=1:"THE OBSERVER IS IN THE UMBRA OF THE MOON.": ~;K=1:"THE MOON IS BETWEEN THE SUN AND EARTH.": K=1:"IT IS DAYTIME.": S"IN MOST PRISMATIC BINOCULARS THEPRISMS INCLUDED IN THE OPTICAL PATH ARE THERE:" J=14:S4 CK=1:"TO SHORTEN THE ACTUAL LENGTH OF THE INSTRUMENT.": %K=1:"TO INVERT THE IMAGE.": IK=1:"TO AVOID BRIGHTNESS LOSSES FROM REFLECTING MIRRORS.": :"WHICH DEVICE IS ABLE TO DETECT ULTRAVIOLET RADIATION?" J=13 :S4 K=1:"A THERMOPILE.": #K=1:"PHOTOGRAPHIC FILM.": K=1:"A PHOTOCELL.": ["DURING THE COMPRESSION STROKE OFA FOUR STROKE ENGINE, WHICH OF THESE CONDITIONS APPLY?" J=5:S4 8K=1:"THE PISTON MOVES TOWARDS THE VALVES.": )K=1:"THE INLET VALVE IS SHUT.":  "THE EXHAUST VALVE IS OPEN.": dU$=" ":RS=6*(*3+5):"THREE ";RS;U$;" RESISTORS CAN BE","COMBINED TO GIVE:" K0J=16:S4 K=1:3*RS;U$: $K=1:3/2*RS;U$: K=1:RS/3;U$: "0C IS THE TEMPERATURE OF:" J=8:S4 ;K=1:"MELTING ICE AT A PRESSURE OF 101.3 kPa.": "COLDEST WATER.": "VERY COLD ICE.": 5"WHICH POWER RATING IS LIKELY FORAN ELECTRIC IRON?" U$=" W":J=19:S4 K=1:750;U$: K=1:350^;U$: 1500;U$: C"FOR A VIBRATING STRING AT ITS FUNDAMENTAL TONE THE NODES ARE:" J=12 :S4 K=1:"AT EACH END.": "IN THE MIDDLE.": /"A QUARTER OF THE WAY FROM EACH END.": 4"THE COLOUR CODES FOR ELECTRICAL MAINS WIRING IS:" J=19:S4 )K=1:"BROWN FOR THE LIVE WIRE.": +K=1:"BLUE FOR THE NEUTRAL WIRE.": 6K=1:"GREEN/YELLOW FOR THE EARTH WIRE.": @"WHICH FACTOR WILL INCREASE THE EFFICIENCY OF A TRANSFORMER?" J=18:S4 "K=1:"A LAMINATED CORE.": +K=1:"THICKER WIRE IN THE COILS.": "BETTER WIRE INSULATION.": C"PRESSURE IS DEFINED AS THE FORCEDIVIDED BY THE AREA IT ACTS ON." :8;"p = F/a"  k"WORK IS MEASURED IN JOULES (J)."''"THE NEWTON-METRE CAN BE CONFUSEDWITH THE UNIT OF TURNING MOMENT." ܅:"IT IS IMPORTANT TO UNDERSTAND THAT WORK IS THE PRODUCT OF FORCE TIMES THE DISPLACEMENT IN THE DIRECTION OF THE FORCE." *:3;"WORK = FORCE * DISPLACEMENT"  \"THE MASS NUMBER OF AN ATOM IS THE SUM OF THE PROTONS AND THE NEUTRONS IN ITS NUCLEUS." Q:"THE ATOMIC NUMBER IS SIMPLY THE NUMBER OF PROTONS IN THE NUCLEUSOF AN ATOM." :"IN THIS CASE BERYLLIUM, MASS NUMBER 9, HAS 5 NEUTRONS IN ITS NUCLEUS AND SO 4 PROTONS MUST ALSO BE THERE TO MAKE THE TOTAL MASS NUMBER OF 9."  "PYROMETERS ARE SPECIALLY MADE FOR THE MEASUREMENT OF VERY HIGHTEMPERATURES SUCH AS THOSE USED IN FURNACES FOR MELTING METALS."  "THE APPROXIMATE VALUES ARE:" :"LIGHT","600000000 MHz","RADAR";21;"1000 MHz","RADIO",23;"10 MHz","1000000 Hz";24;"1 MHz","ULTRASOUND";21;"0.05 MHz"  "THE SPECIFIC THERMAL CAPACITY OFA SUBSTANCE IS THE HEAT NEEDED, IN J, TO RAISE THE TEMPERATURE OF 1 kg OF IT BY 1 K (1C)." ~:"IN THIS CASE ";JU;" J RAISE THE","TEMPERATURE BY ";TEM;"C, SO FOR A","1 K RISE ONLY ";JU;"/";TEM;" JOULES","ARE NEEDED." R:"FOR 1 kg INSTEAD OF ";WT;" kg","OF COPPER THE NUMBER OF JOULES REQUIRED IS:" -:3;JU;" / ";TEM;" / ";WT;" = 385 J"  C''"SO THE SPECIFIC HEAT FOR COPPER IS:"''" c = 385 J/(kgK)";    O"EVERYTHING WILL FALL AT THE SAMERATE BUT FOR THE EFFECT OF AIR RESISTANCE." :"AIR RESISTANCE IS ABOUT EQUAL FOR BODIES OF THE SAME SHAPE AND SIZE. ACCORDINGLY BOTH THE IRON CANNON BALL AND THE WOODEN BALL FALL AT ABOUT THE SAME RATEAND REACH THE SAME VELOCITY."  X"THE ECHO HAS TO GO TO AND RETURNFROM THE CLIFF,i.e. TRAVEL TWICETHE DISTANCE SOUGHT." a:"THE TOTAL DISTANCE TRAVELLED BY THE SOUND IS:",,,,6;"342 * ";TM;" = ";342V*TM;U$ M:"SO THE DISTANCE TO THE CLIFF IS HALF OF THIS, i.e. ";171*TM;U$;"."   "SENSING TEMPERATURE BY FEELING IS USUALLY VERY DECEPTIVE. IN THIS CASE THE GREATER THERMAL CAPACITY OF COPPER ALLOWS IT TO REPLACE THE HEAT LOST ON CONTACTWITH ONLY A SLIGHT LOWERING OF THE TEMPERATURE." ":"WOOD, ON THE OTHER HAND, HAS A SMALLER RESERVE OF HEAT AND THE TEMPERATURE OF THE WOOD FALLS MUCH MORE FOR THE SAME LOSS OF HEAT." $:"IN ADDITION THE METAL HAS A HIGHTHERMAL CONDUCTIVITY COMPARED TOWOOD AND THIS ALLOWS THE COPPER TO REPLACE MORE EASILY THE HEAT LOST FROM ITS SURFACE." ) *?1:"FORCE IS THE RATE OF CHANGE OF MOMENTUM.":0 ,:"SINCE MOMENTUM INVOLVES VELOCITY(INCLUDING ZERO VELOCITY), FORCEPRODUCES CHANGES OF DIRECTION ASWELL AS CHANGES OF SPEED." 3 4;"THE TWO RESISTORS IN PARALLEL MUST BE COMBINED FIRST:" 6S:" 1/";RA;"+1/";RB;" = ";.001wn*(1000/RA+1000/RB+.5) 8<:"THIS GIVES A VALUE OF ";RD-RC;U$,"FOR THE COMBINATION." :P:"TO THIS RESULT THE VALUE OF THE RESISTOR IN SERIES, ";RC;U$;", IS"'"ADDED:" <':6;RD-RC;" + ";RC;" = ";RD;U$ = >^"OBVIOUSLY A PLANE MIRROR MUST FORM AN IMAGE BEHIND ITSELF, SO THE IMAGE MUST BE VIRTUAL." @^:"ALL THE OTHER MIRRORS CAN FORM A REAL IMAGE GIVEN THE CORRECT POSITION FOR THE OBJECT." G HT"THE APPARENT WEIGHT IS JUST THE WEIGHT IN AIR LESS THE UPTHRUST FROM THE LIQUID." J.:6;WT;" - ";NU;" = ";.728Q*WT;U$ Q R."BETA RAYS ARE VERY HIGH SPEED ELECTRONS." T:"WHEN A BETA PARTICLE IS EMITTED FROM A NUCLEUS IT CHANGES ONE NEUTRON INTO A PROTON AND SO IT INCREASES THE ATOMIC NUMBER BY ONE UNIT." VX:"THE MASS NUMBER REMAINS THE SAMEAS THE MASS OF A BETA PARTICLE IS VIRTUALLY ZERO." [ \n"AT THE TOP OF THE CYCLE THERE ISTHE LEAST TENSION ON THE SPRING AND SO THE ENERGY STORED IS AT A MINIMUM." e fA"AT ABOUT 760C MOST IRON ALLOYS LOSE ALL TRACES OF MAGNETISM." o po"SINCE COPPER EXPANDS MORE THAN IRON THE STRIPS WILL CURVE DOWN TO ALLOW FOR THE EXTRA LENGTH OFTHE COPPER." re12 ,7;"STEEL";10 ,22;"COPPER";12 ,16;">";10 ,17;"<" tN100d,75K:32 ,0:172,91[:-32 ,0: v180,59;:-8,-7:N=02:60<,110n-4*N:120x-4*N,-502,-/5:N:60<,110n:0,-8: y z"THE MAIN FUNCTION OF THE IRON CORE IS TO CONCENTRATE MOST OF THE MAGNETIC FIELD INTO A SMALL AREA AND SO MAKE THE MAGNET MUCHMORE POWERFUL."  ?"THE DENSITY OF A BODY IS ITS MASS DIVIDED BY ITS VOLUME." :"SINCE THE BLOCK FLOATS, ITS MASSEQUALS THE MASS OF WATER THAT ITDISPLACES, i.e. THE DENSITY OF WATER TIMES THE VOLUME IMMERSED:" 2:"MASS = VOLUME*(";PER/10 ;"/100)*1000 kg" 4:"THE DENSITY IS THIS MASS DIVIDEDBY ITS VOLUME:" 1:"DENSITY=";PER/10 ;"/100*1000 = ";PER;U$  X"THE SMOKE PARTICLES ARE ALL THE TIME BOMBARDED BY MOLECULES OF OXYGEN AND NITROGEN." :"INCREASING THE TEMPERATURE WILL BOTH INCREASE THE VELOCITY OF THE MOLECULES AND THEIR RATE OF IMPACT THUS MAKING ALL THE SMOKEPARTICLES MOVE ABOUT MUCH MORE."  y1;"THE VELOCITY RATIO OF A SYSTEM IS THE RATIO OF DISTANCE MOVED BY THE EFFORT TO DISTANCE MOVED BY THE LOAD." |:"WHEN THE LOAD IS","RAISED THROUGH THE ","HEIGHT ""h"" THE",,"EFFORT WILL PULL","IN A LENGTH 4*h.",,,"SO THE V.R. IS 4." E:"NOTICE THAT THERE","ARE 4 STRANDS BETWEEN","THE PULLEY SYSTEMS." t9000(#:11 ,21;"""h""":170,89Y:502,0:170,79O:502,0  $"THE EQUATION FOR 'FREE FALL' IS:" :8;"h = gt" 9:"MULTIPLYING BOTH SIDES BY 2 :"',8;"2*h = gt" =:"DIVIDING BOTH SIDES BY t GIVES:"''8;"g = 2*h/t"  "THE CURRENT IS CARRIED BY THE ELECTRONS WHICH, IN A METALLIC CONDUCTOR, CAN HOP FROM ONE ATOMTO THE NEXT, UNDER THE DRIVE OF THE APPLIED VOLTAGE."  "HEATING A LIQUID INCREASES THE MOVEMENT OF ITS PARTICLES UNTIL THEY CAN BREAK FREE AND OVERCOMEATMOSPHERIC PRESSURE ACTING ON THE LIQUID. THIS IS THE BOILINGPOINT OF THE LIQUID." }:"FROM THAT POINT ON THE MOLECULESOF THE LIQUID CAN MOVE FREELY INSPACE WITH GREATER VELOCITY THANTHEY HAD IN THE LIQUID."  h9 ,0;"THE DIAGRAM SHOWS THE RESONANT WAVELENGTH TO BE FOUR TIMES THE LENGTH OF THE TUBE." I:"FROM THE GENERAL WAVE EQUATION:",,,"VELOCITY = WAVELENGTH*FREQUENCY" ]:"THE FREQUENCY IS SIMPLY:",,," 330/(4*";LN;") = ";.1}L*(3300 /4/LN);U$  9050Z#  T"THE ELECTROSTATIC CAPACITY OF A SPHERE IS DIRECTLY PROPORTIONAL TO ITS DIAMETER." ̄:"PLACING AN ELECTROSTATIC CHARGE ON A LARGE SPHERE WILL CREATE A MUCH SMALLER POTENTIAL THAN THE SAME CHARGE ON A SMALL SPHERE."  9"THE 12 VOLTS ARE DIVIDED OVER THE TOTAL RESISTANCE:" Z:4;"12/(";RA;"+";RB;"+";RC;") = ";.001wn*(12000./(RA+RB+RC));U$;"/";V$ R:"THE VOLTAGE ACROSS Rx IS SIMPLY THIS RESULT MULTIPLIED BY THE VALUE OF Rx:" D:6;RC;"*";.001wn*(12000./(RA+RB+RC));" = ";Rx;U$  L"INITIALLY THE LIQUID IS HOT IN ITS CONTAINER AND HEAT IS LOST RAPIDLY." r:"WHEN THE LIQUID STARTS TO FREEZETHE TEMPERATURE REMAINS FIXED BUT HEAT IS STILL BEING LOST AT A HIGH RATE." :"WHEN ALL THE LIQUID HAS TURNED SOLID THE TEMPERATURE STARTS TO FALL AGAIN AND EVENTUALLY COMES CLOSE TO ROOM TEMPERATURE WHEN THE RATE OF LOSS OF HEAT IS AT AMINIMUM."  X18-VY,13 +VX;"Y";18,VH+14;"X";18-VY,13 +VH+VX;"R" 9210#:108l,19:8*(VH+VX),8*VY:DX=2+(2*(VH+VX)/VY):DY=4-DX:-DX,-DY:DX,DY:DY,-DX W109m+8*VX,20+8*VY:8*VH,0:-8*VX,-8*VY U2,0;"THE RESULTANT 'OR' IS SET BY THEPARALLELOGRAM OF FORCES 'OXRY'."  {"WATTAGE IS EQUAL TO THE VOLTAGE MULTIPLIED BY THE CURRENT. THIS GIVES THE CURRENT AS THE WATTAGEDIVIDED BY THE VOLTAGE." S:"AT 240 V, EACH ";WT;" W BULB USES:",,6;WT;" / 240 = ";WT/240;" A" :"THE NUMBER OF BULBS THAT WILL MAKE A CURRENT OF ";AM;" A IN","ALL IS FOUND BY DIVIDING THE TOTAL CURRENT BY THAT PASSING THROUGH EACH BULB:" +:6;AM;" / ";WT/240;" = ";NU  w"A UNIT OF ELECTRICITY IS 1000 Wh(1 kWh). THIS MEANS THAT A UNITIS USED WHEN A TOTAL OF 1000 W IS ON FOR ONE HOUR." E:"IN THIS CASE ";WT;" W WERE ON FOR",TM;" HOURS SO THE UNITS ARE:" ;:4;WT;"*";TM;"/1000 = ";WT*TM/1000;" UNITS" :"THE UNITS USED TIMES THE PRICE FOR EACH ONE IS THE TOTAL COST:",,4;WT*TM/1000;"*5.5 = ";WT*TM/1000*5.50;"p"  7:7::1,13 ;"GREEN";6,8;"CYAN";19;"YELLOW";12 ,5;"BLUE MAGENTA RED" N80P,84T:88X,0:-44,,74J:-44,,-74J :"MIXED IN THE CORRECT PROPORTIONSTHE PRIMARY COLOURS BLUE, GREEN AND RED WILL PRODUCE ALL OTHER COLOURS. THE TWO SETS OF COLOURSARE IN ALPHABETICAL ORDER:" 0:"Blue, Green, Red","Cyan, Magenta, Yellow.";  "THE WAY THE COILS ARE WOUND CAN ALSO DETERMINE THE POLARITY OF AN ELECTROMAGNET BUT ONCE IT HASBEEN CONSTRUCTED ONLY CHANGING THE DIRECTION OF THE CURRENT CANCHANGE THE POLES OVER."  j"A SHORTSIGHTED EYE FORMS THE IMAGE OF A DISTANT OBJECT IN FRONT OF THE RETINA INSTEAD OF ON IT." :"THIS CAN BE CORRECTED WITH A DIVERGING LENSE PLACED CLOSE TO THE EYE. THIS LENSE IN EFFECT MOVES THE IMAGE FURTHER BACK ANDWHEN CORRECTLY COMPUTED WILL RESTORE SHARP FOCUS TO THE EYE." # $/"SIMILAR MAGNETIC POLES REPEL EACH OTHER." &:"THE WORK DONE IN BRINGING BOTH MAGNETS CLOSE TOGETHER AGAINST THEIR MUTUAL REPULSION CAUSES A SLIGHT BUT MEASURABLE RISE IN TEMPERATURE OF THE MAGNETS." (:"THE FIELD BETWEEN TWO SIMILAR MAGNETIC POLES MUST AT ONE POINTBETWEEN THEM BE ZERO. THIS IS CALLED THE NEUTRAL POINT." - ."THE PRINCIPAL LOSS OF HEAT FROM A CONTAINER IS TO THE AIR AROUNDIT. THE VACUUM JACKET IN THE THERMOS FLASK REDUCES THIS LOSS VERY SUBSTANTIALLY BY REDUCING AIR CONDUCTION AND CONVECTION." 0`:"THE HEAT LOST BY RADIATION IS ALSO REDUCED BY THE SILVERING- A LESS SIGNIFICANT FACTOR." 7 8"THE EXPANSIVITY OF A SUBSTANCE IS THE INCREASE IN ITS LENGTH DIVIDED BY THE LENGTH AT 0C ANDDIVIDED BY THE TEMPERATURE RISE PRODUCING THE INCREASE. IN THISCASE:" :#:EX;"/";LN;"/60 = 25*10^(-6) /K" ":4,115s:233,0:7,7;"WAVELENGTH = 4*l";0,0;"<";0,8;">":4,171:64@,0:0,4;"l" #dP=-112:6,143:O=08:13 ,4-O+(2*O-8)*(P=1):O:O=08:13 ,O-4-(2*O-8)*(P=1):O:P #np66B,156:0,-1:-62>,0:0,-24:62>,0:0,-1 # #x4,129:n=019:8,-19+.5*(19+1.05fff*n):n=660<,0 #n #o9 ,1;"C";20,14;"Time ->":4,130:0,-110n:250,0: # #\VH=(*10 +7):VX=2*(*6-4):VY=2*(*4+3) #19,13 +VH;">";13 ;"O":108l+8*VH,19:-8*VH,0:8*VX,8*VY:DX=2+(2*VX/VY):DY=4-DX:-DX,-DY:DX,DY:DY,-DX $ $TE=(*3+1):H$=("BLUE"E=1)+("GREEN"E=2)+("RED"E=3):G$=("GREEN"E=1)+("RED"E=2)+("BLUE"E=3): $6:6:: $7:7:: %M=(*5+1) %&:Y=04:A$(3*Y+13*Y+3);:V+N$(Y+M)+4:N$(Y+M)=1Q$=A$(3*Y+1) %0Y:S3 %M=(*5+1) %jY=04:V+N$(M+Y)+4:A$(3*Y+1):N$(Y+M)=1Q$=A$(3*Y+1) %Y:S3 % M=1+3*(*2) %|:TT=0:Y=02:B$(3*Y+1);". ";:K=0:V+M$(M+Y)+4:TT=TT+(Y+2)*(K>0) %Y:Q$=C$(TT-1):S3 %2,0;3;"A";9 ;"B";15;"C";21;"D";27;"E":,," 1,2,3";8;"1,2";14;"2,3";21;"1";27;"3":" ALL ONLY ONLY ONLY ONLY":" RIGHT RIGHT RIGHT RIGHT RIGHT" %r4,117u:238,0:4,149:238,0:4,165:238,0 %AO=4244480:O,165:0,-480:O &: &H%W$:RT=1q$=" ":9840p& &R9N(J)=N(J)+1:W$=Q$W$=(Q$+32 )9890& &\20,0;"NO- ";Q$; &f9" YOUR SCORE IS ";ANS;"/";Q:"PRESS 'ENTER'":0 &pW$Q$W$(Q$+32 )RT=0:6:6::V+1000:"ENTER 'Y' TO REVIEW THE QUESTIONPRESS 'ENTER' TO GO ON.";I$:I$="Y"I$="y"RT=1:9870& &zQ=5029900& &(V=V+10 :Q=(V-990)/10 &C7:7::"QUESTION ";Q;"."::V133029700% &V &WANS=ANS+1:20,0;"CORRECT- ";Q$;".";:S(J)=S(J)+1:9830f& &b20,0;"PRESS 'ENTER' FOR TEST RESULTS.":0::10 ,0;"YOU HAVE:- "; &S=ANS:2;("FAILED-"S23);("UNGRADED"S8);("GRADE "S>8S<23);("E"S>8S16);("D"S>16S23);0;("PASSED-GRADE "S>23);("C"S>23S34");("B"S>34"S41));("A"S>41)) &M17,0;"PRESS 'ENTER' FOR AN ANALYSIS OFYOUR TEST RESULTS":P$: &J=021:J,0;1;("MECHANICS"J=0);0;("Units-Vectors-Density"J=1);("Particulate Matter"J=2);("Motion"J=3);("Static Systems"J=4);("Work-Energy-Power"J=5);("Pressure-Flotation"J=6); &ԍJ,0;1;("HEAT"J=7);0;("Nature-Units-Transfer"J=8);("Expansion"J=9 );("Heating Changes"J=10 ); &ޛJ,0;1;("WAVES-SOUND-LIGHT"J=11 );0;("Vibrations-Waves"J=12 );("Electromagnetic Waves"J=13 );("Optics"J=14); &J,0;1;("ELECTRICITY-MAGNETISM"J=15);0;("e.m.f.-Currents"J=16);("Magnetism"J=17);("Electromagnetics"J=18);("Domestic Electricity"J=19);("Electrostatic Charges"J=20);("The Atom"J=21); &DI=-1:J>0J7J11 J15I=S(J)/N(J) &J,22;2;("VERY BAD"I=0);("POOR"I>0I.3);("AVERAGE"I>.3I.6);("GOOD"I>.6I.85Y);1;5;("EXCELLENT"I>.85Y); 'J '"PRESS 'ENTER'. ";I$::S<45-4,0;"YOU HAVE NOT REACHED GRADE 'A' STANDARD."::"YOU ARE ADVISED TO REPEAT THIS TEST UNTIL YOU DO ATTAIN THAT GRADE." 'S<45-''"You will find that the question letters have been jumbled up andmost numerical questions have new data. The question sequence,however, remains unchanged.":"PRSS 'ENTER' TO TRY AGAIN. ";I$:502 ' q"YOU HAVE REACHED A GOOD STANDARDIN THIS TEST. START THE TAPE AND THEN PRESS 'ENTER' TO LOAD THE NEXT ONE." ' "" '"PHYSICS 1"1 @q8n%%H&%%vj%N 2514325143M123321AA. B. C. D. E. B 1. 2. 3. qqCD EB C AD032080016032112000000000n$b\(eYY*\)eHREDGBLUEkU $0I$0%QEWg9999%PHYSICS 1 yy{6{ A0:0:0:0:5:5:0: 5,8;" P H Y S I C S "''15;"2";11 ,1;"THIS PROGRAM TAKES ABOUT THREE "''" MINUTES TO LOAD COMPLETELY" Y2:255,0:0,175:-255,0:0,-175 2*5:5:0,0:"" <"PHYSICS 1"1 5PANEL 1 >>fP@ 0:5:5::3,12 ;"PAPER I";''9 ;"REVISION TEST";10 ,1;"YOU ARE NOT PERMITTED THE USE OF AN ELECTRONIC CALCULATOR OR ANY AID TO HELP WITH NUMERICAL CALCULATIONS."''" USE SPARE PAPER FOR ROUGH WORK IF NECESSARY." 5:5:"" <"PANEL 1"1 ^PANEL 2 e 5:5:0::4,0;" THESE PROGRAMS ARE DESIGNED TO REMIND YOU VERY EFFICIENTLY OF KNOWLEDGE YOU HAVE FORGOTTEN." z'''" THE PROGRAM YOU ARE LOADING CONSOLIDATES SOME OF THIS RECALLED KNOWLEDGE AND ALSO BREAKS NEW GROUND." :''" A HIGHER STANDARD OF THINKING IS ALSO CALLED FOR." 2!5:0,0:"" <"PANEL 2"1 &PHYSICS 2 tri&t l0:10 ,3;" S T O P T H E T A P E ";13 ,4;"PRESS ANY KEY TO GO ON." #.5,36$:""20  10 u:,,,," TO ANSWER THE QUESTIONS:",,," 1. PRESS THE LETTER FOR THE ANSWER YOU CHOOSE.",,," 2. PRESS 'ENTER'." #G'''"YOU CAN CHANGE YOUR ANSWER BY USING 'DELETE' IN THE USUAL WAY." (:20,1;"NOW PRESS 'ENTER' TO START.":0 2:N$="2514325143":M$="123321":A$="A. B. C. D. E. ":B$="1. 2. 3. "::S(22):N(22):Q=1:"QUESTION 1."::ANS=0 :M=18:D$:N=07:D:D$+N,D:N:M I"",480,72H,72H,480,0,0,0,0 K"",32 ,80P,16,32 ,112p,0,0,0 J"",96`,16,32 ,16,96`,0,0,0 Q"",0,96`,102f,102f,231,102f,102f,96` P"",16,16,254,254,0,254,254,16 M"",0,34",502,58:,255,58:,502,34" Q"",0,102f,102f,102f,102f,102f,102f,0 L"",0,60<,66B,66B,66B,36$,231,0 V BJ=1:"WHICH OF THESE UNITS MEASURES KINETIC ENERGY?":S1 "J": "N":  "m/s":  "kJ/kgK": "g": ?"THE UNIT FOR MEASURING ALL KINDSOF ENERGY IS THE JOULE (J)." K LIJ=2:"WHEN A PURE SOLID MELTS ITS MOLECULES WILL ALWAYS:":S1 e"HAVE GREATER FREEDOM.": j"VIBRATE MORE.": o"BE FURTHER APART.": t"EVAPORATE MORE QUICKLY.": y"GIVE OFF HEAT.": ~X"THE PROCESS OF MELTING GIVES MORE FREEDOM TO THE PARTICLES MAKING UP THE SOLID."  XJ=3:"AT WHICH POINT IN THE VELOCITY- TIME GRAPH IS THE ACCELERATION GREATEST?" 7,0;"V";19,21;"Time":16,130:0,-100d:220,0:16,30:568,28:40(,40(:26,8:30,-20:40(,-20:S2 11 ,10 ;: 15,5;: 8,15;: 9 ,20;: 11 ,23;: S"THE GREATESR ACCELERATION IS ON THAT PART OF THE CURVE WITH THE STEEPEST SLOPE."  rJ=4:"A SPRING STRETCHES 1.5 cm WITH ALOAD OF 6 N. WHAT EXTENSION CAN BE EXPECTED WITH A LOAD OF 4 N?":S1 - "1 cm. ": 2 "1.3 cm.": 7"1.86 cm.": <"1.33 cm.": A "1.4 cm.": F5"THE EXTENSION IS GIVEN BY:"''" 1.5*4/6 = 1 cm." w xAJ=5:"WHICH OF THE FOLLOWING IS NOT A UNIT FOR WORK?":S1 "A PASCAL.": "A NEWTON METRE.": "A KILOWATT HOUR.": "kg m/s.": "A JOULE.": Q"THE PASCAL IS A UNIT OF PRESSUREAND IS EQUAL TO ONE NEWTON PER SQUARE METRE."  yJ=6:f=(*6+4):"WHAT PRESSURE IS EXERTED BY ";F;" N"'"ACTING ON A SQUARE HAVING A SIDEOF 4 cm?":S1 F/1.6L;" Pa": f/4;" Pa": 4*f;" Pa": $0.01z# =*(1600@/f);" Pa":  "36 N/m": "THE PRESSURE IS THE FORCE, ";F;" N,"'"DIVIDED BY THE AREA, 16/10000 m"''"i.e. ";f/16*10000';" Pa"''" OR ";10 *f/16;" kPa." ? @SJ=8:"WHICH OF THE FOLLOWING MEASURES THE KINETIC ENERGY OF MOLECULES?":S1 Y"TEMPERATURE.": ^"DENSITY.": c"PRESSURE.": h"REFRACTIVE INDEX.": m"THERMAL CONDUCTIVITY.": r"THE TEMPERATURE OF A SUBSTANCE IS A MEASURE OF THE DEGREE OF THERMAL AGITATION OF ITS ATOMS,-THEIR AVERAGE KINETIC ENERGY "  AJ=9 :"A BIMETALLIC STRIP IS MADE FROM TWO METALS OF:":S1 "DIFFERENT EXPANSIVITY.": "DIFFERENT ELEMENTS.": "DIFFERENT ATOMIC MASS.": !"EQUAL THERMAL CONDUCTIVITY.": "THE SAME DENSITY.": ֢"THE METALS MUST HAVE DIFFERENT EXPANSIVITIES SO THAT CHANGES INTHE TEMPERATURE OF THE STRIP CAUSE IT TO BEND AND SO OPERATE SOME FORM OF THERMAL ACTUATOR."  J=10 :W=(*7+3):MS=(*5+5):T=10 *(*4+6):S=(.89c =*T*MS/W):"A ";W;" kW HEATING COIL RAISES ";MS;" kg"'"OF ALUMINIUM THROUGH ";T;"C IN "'S;" s. CALCULATE THE SPECIFIC"'"THERMAL CAPACITY OF ALUMINIUM?":S1 !0.01z# =*(100d*S*W/(T*MS));" kJ/kgK.": &0.85Y;" kJ/kgK.": +0.96u\;" kJ/kgK.": 01.04R;" kJ/kgK.": 5"0.75 kJ/kgK.": :V"THE HEAT PUT INTO THE ";MS;"kg OF"'"ALUMINIUM IS:"''" ";W;"*";S;" = ";W*S;" kJ." D`'"THE HEAT SUPPLIED TO EACH kg OF ALUMINIUM IS:"''" ";W;"*";S;"/";MS;" = ";(W*S/MS);" kJ." N'"THE HEAT NEEDED FOR 1 RISE IN TEMPERATURE IS:"''" ";W;"*";S;"/(";MS;"*";T;") = ";.01z# =*(100d*W*S/MS/T);" kJ/kgK." k lSJ=12 :"WHICH OF THE FOLLOWING IS AN EXAMPLE OF A LONGITUDINAL WAVE?":S1  "SOUND.": "SURFACE WAVES.": "RIPPLE TANK WAVES.": "TIDAL WAVES.": "SINE WAVES.": "SOUND WAVES ARE A GOOD EXAMPLE OF LONGITUDINAL WAVES. THERE ARENOT MANY COMMON EXAMPLES BUT THESEISMIC SURFACE WAVES (MAKING EARTHQUAKES) AND WAVES OF CARS ON A ROAD (TRAFFIC WAVES) ARE WORTH NOTING."  rJ=14:"WHICH OF THE FOLLOWING PROVIDES THE BEST EVIDENCE FOR THE REC- TILINEAR PROPAGATION OF LIGHT?":S1 "ASTRONOMICAL ECLIPSES.": "THE PINHOLE CAMERA.": "FOCUSSING BY LENSES.": "REFLECTION BY MIRRORS.": "CRITICAL ANGLES.": "WHITHOUT DOUBT THE BEHAVIOUR OF PLANETS AND MOONS IN THE SOLAR SYSTEM AND BEYOND PROVIDE THE STRONGEST EVIDENCE THAT LIGHT TRAVELS IN STRAIGHT LINES."  '"THE ASTONISHINGLY ACCURATE EVENTPREDICTION POSSIBLE IN ASTRONOMYCONTRADICTS ANY DEPARTURE FROM A STRAIGHT LINE CONCEPT IN THE PATH FOLLOWED BY LIGHT RAYS." 3 4OJ=13 :"WHICH OF THE FOLLOWING COLOURS HAS THE LONGEST WAVELENGTH?":S1 M "RED.": R "GREEN.": W "YELLOW.": \ "BLUE.": a "INDIGO.": fU"THE SPECTRAL ORDER OF COLOURS CAN BE REMEMBERED FROM:"''" R O Y G B I V" po'"THE ";1;"L";0;"ONGEST WAVELENGTH (LOWEST FREQUENCY) IS ON THE ";1;"L";0;"EFT."  tJ=16:"THE THREE CELLS , EACH OF 1.8 V e.m.f., ARE CONNECTED AS SHOWN."''"WHAT IS THEIR COMBINED e.m.f.?" 213,107k:10 ,0:150,107k:30,0:0,8:32 ,0:0,-16:-32 ,0:0,8 G7,24;"";8,20;"";9 ,24;"":S1  "3.6 V":  "2.7 V":  "5.4 V":  "1.8 V":  "0.9 V": u"THE TWO CELLS IN PARALLEL DO NOTADD THEIR e.m.f.'s. SO THE TOTALe.m.f. FOR THE CIRCUIT IS:"''" 1.8+1.8 = 3.6 V"  aJ=17:"WHEN A ROD OF HARD STEEL IS PUT INTO A STRONG MAGNETIC FIELD ANDTHEN REMOVED:":S1 $"IT BECOMES A PERMANENT MAGNET.": "IT BECOMES SOFTER.": "IT IS DEMAGNETISED.": $"IT GETS SLIGHTLY COLDER.": )$"IT OPPOSES THE MAGNETIC FIELD.": .s"PERMANENT MAGNETS ARE MADE BY PLACING THE HARD STEEL IN A SOLENOID GENERATING A STRONG MAGNETIC FIELD." 8b'"WHEN THE CURRENT IS TURNED OFF THE MAGNETISM IS LARGELY KEPT BYTHE PERMANENT MAGNET CREATED." _ `bJ=18:"WHEN THE CURRENT IN A COIL IS INCREASED THREEFOLD ITS MAGNETICATTRACTION IS:":S1 y"THREE TIMES GREATER.": ~"NINE TIMES GREATER.": "DOUBLED.": "UNCHANGED.": #"INCREASED BY A FACTOR OF 1.5.": d"THE MAGNETIC ATTRACTION OF AN ELECTROMAGNET IS DIRECTLY IN PROPORTION TO THE CURRENT IN IT."  @J=19:"A QUANTITY OF ELECTRICITY CAN BEMEASURED IN:":S1 "COULOMBS.": "VOLTS.": "AMPERES.": "OHMS.": "kW.": "ELECTRIC CHARGE IS MEASURED IN COULOMBS. A COULOMB IS THE TOTALELECTRIC CHARGE THAT PASSES WHENONE AMPERE FLOWS FOR ONE SECOND." ' (DJ=19:"THE PEAK VOLTAGE IN A 240 V a.c.MAINS SUPPLY IS:":S1 A "340 V": F "240 V": K "440 V": P "250 V": U "300 V": Zw"FOR A MAINS SUPPLY OF 2440V a.c.THE PEAK VOLTAGE WOULD IS:"''" 240*(2) = 240*1.41 = 340 V."  @J=21:"THE COMPONENTS OF THE NUCLEUS OFAN ATOM ARE:":S1 "PROTONS AND NEUTRONS.": "NEUTRONS AND ELECTRONS.": "PROTONS AND ELECTRONS.": "ALPHA PARTICLES.": "ENERGY PULSES.": "THE NUCLEUS IS COMPOSED OF TWO KINDS OF PARTICLES, EACH HAVING ONE UNIT OF ATOMIC MASS, PROTONSWITH A SINGLE POSITIVE CHARGE AND NEUTRONS WITH NO CHARGE."  J=6:"WHAT IS THE INCREASE IN PRESSUREWHEN DESCENDING 10 m BELOW THE SURFACE OF A LIQUID OF DENSITY 1027 kg/m? (g = 10 m/s)":S1 "102.7 kPa.": "100 N/m.": "0.1027 kg/m": "1027 Pam": "0.097 Pa.": ""THE INCREASE OF PRESSURE FROM THE SURFACE IS THE DEPTH TIMES THE DENSITY TIMES THE VALUE OF 'g', THE ACCELERATION DUE TO GRAVITY."''" 10*1027*10 = 102.7 kPa." S TJ=8:F=(*7+3):L=(*9 +9 ):"THE WORK DONE IN MOVING A LOAD OF ";F;" N UP A DISTANCE OF ";L;" m IS:":S1 m L*F;" J.": r L*F;" N.": w".1}L*(10 *L/F);" J.": |".1}L*(10 *L/F);" N.": 212;" kg/m.": e"WORK IS FORCE TIMES DISPLACEMENTIN THE DIRECTION OF THE FORCE. IT IS MEASURED IN JOULES (J)." @'"IN THIS CASE THE ANSWER IS:"''" ";F;"*";L;" = ";F*L;" J."  'J=10 :"DEW IS FORMED WHEN:":S1 c"THE WATER VAPOUR PRESSURE EXCEEDS THE SATURATED VAPOUR PRESSURE AT THAT TEMPERATURE.": *"THE TEMPERATURE FALLS BELOW 4C.": "IT IS A CLEAR NIGHT.": "IT IS EARLY MORNING.": O"THE WATER VAPOUR PRESSURE IS GREATER THAN ATMOSPHERIC PRESSURE.": "CONDENSATION OF WATER VAPOUR TAKES PLACE, AND FORMS DEW, AS SOON AS THE PRESSURE OF WATER VAPOUR EXCEEDS THE SATURATION VALUE AT THE AIR TEMPERATURE CONCERNED."  ?J=12 :"A WORKING LOUDSPEAKER IS AN EXAMPLE OF:":S1 5"A FORCED VIBRATOR.": :"A RESONATOR.": ?"ELECTROMAGNETIC WAVES.": D"TRANSVERSE WAVE.": I"NODES IN ACTION.": N"THE LOUDSPEAKER IS MADE TO MOVE BY THE DRIVING CURRENT FROM THE AMPLIFIER IT IS CONNECTED TO ANDSO IT IS AN EXAMPLE OF A FORCED VIBRATOR."  :J=14:"WHICH POINT IN THE DIAGRAM MARKSTHE UMBRA?" 16,2;"SOURCE";13 ;"SCREEN":36$,112p:0,-40(:-3,0:0,40(:3,0:210,-32 :36$,112p:160,-63?:246,104h:-210,-32 :160,63? BN=13:109m-N,84T:0,16:N:S2 10 ,16;: 10 ,10 ;: 10 ,29;: 14,21;: 6,24;: {"FROM A POSITION IN THE UMBRA THESOURCE CANNOT BE SEEN AT ALL. ITIS ALSO THE REGION OF GREATEST DARKNESS IN THE SHADOW."  J=14:l=.1}L*(*90Z+10 ):"WHAT IS THE RADIUS OF CURVATURE OF A CONCAVE MIRROR WITH A FOCALLENGTH OF ";L;" cm?":S1 2*L;" cm.":  l;" cm.": l/2;" cm.": l;" m.": 4*l;" m.": ["THE RADIUS OF CURVATURE OF A CONCAVE OR A CONVEX MIRROR IS TWICE THE FOCAL LENGTH." G HyJ=16:"THE CELL SHOWN IN THE DIAGRAM WAS USED TO STUDY VARIOUS PAIRS OF ELECTRODES WITH THE FOLLOWINGRESULTS:." J"A. B. e.m.f."''"COPPER MAGNESIUM 2.13 V COPPER ZINC 1.50 V":N=04:15+N,23;6;" ":N LR11 ,0;"WHAT IS THE e.m.f."'"WHEN 'A'IS ZINC AND"'"'B' IS MAGNESIUM?" N\12 ,24;"A B":181,64@:2,-2:0,-46.:480,0:0,46.:2,2:184,568:1,-1:4,0:1,1:5,0:1,-1:22,0:1,1:5,0:1,-1:4,0:1,1 P}N=03:191+N,20:0,480:220+N,20:0,480:N:13 ,0:S1 a "-1.61 V": f "1.61 V": k "-3.83 V": p "3.83 V": u "1.92 V": z`"SINCE THE MAGNESIUM IS THE 'A' ELECTRODE AND ZINC IS 'B', THEN THE RESULT MUST BE NEGATIVE." O'"THE VALUE IS THE DIFFERENCE BETWEEN THE TWO VALUES GIVEN IN THE TABLE."  9J=14:"THE LAWS OF REFLECTION REQUIRE THAT:":S1 ="THE INCIDENT ANGLE EQUALS"'" THE ANGLE OF REFLECTION.": I"THE INCIDENT ANGLE AND"'" THE REFLECTED ANGLE ADD UP"'" TO 90.": Z"THE SINE OF THE INCIDENT ANGLE EQUALS THE SINE OF THE ANGLE OF REFLECTION.": N"THE ANGLES BE MEASURED IN A"'" CLOCKWISE MANNER FROM THE"'" SURFACE.": C"THE REFLECTED RAY ANGLE IS"'" TWICE THE INCIDENT RAY ANGLE.": "THE LAWS OF REFLECTION REQUIRE THAT THE ANGLE OF THE REFLECTED RAY EQUALS THAT OF THE INCIDENT RAY AND THAT BOTH RAYS AND THE NORMAL TO THE SURFACE AT THE REFLECTION POINT SHALL BE IN THESAME PLANE."  MJ=8:"WHICH OF THE FOLLOWING IS USED FOR MEASURING TEMPERATURE?":S1 )"A THERMISTOR.": ."A THERMOSCOPE.": 3"A pH METRE.": 8"A SPINTHARISCOPE.": ="A GRAVIMETER": B"THE THERMISTOR IS A CERAMIC BEADWITH SEMICONDUCTING PROPERTIES WHICH CHANGE ITS ELECTRICAL RESISTANCE VERY MARKEDLY WITH CHANGES IN TEMPERATURE." s tPJ=14:"THE ABSOLUTE REFRACTIVE INDEX OFA SUBSTANCE IS THE RATIO OF:":S1 P"THE VELOCITY OF LIGHT IN A VACUUM TO THAT IN THE SUBSTANCE.": M"SINE OF THE INCIDENT ANGLE TO THE SINE OF THE REFRACTED ANGLE. ": 9"A NUMBER DEPENDING ON THE ANGLE OF INCIDENCE.": :"ANGLE OF INCIDENCE TO THE ANGLE OF REFRACTION.": <"THE DENSITY OF THE SUBSTANCE TO THE DENSITY OF AIR.": n"THE ABSOLUTE REFRACTIVE INDEX ISTHE RATIO OF THE VELOCITY OF LIGHT IN A VACUUM TO THAT IN THESUBSTANCE." '"FOR PRACTICAL PURPOSES THE INDEXIS MEASURED IN AIR AND CAN BE TAKEN AS THE RATIO OF THE SINE OF THE INCIDENT RAY ANGLE TO THESINE OF THE REFRACTED RAY ANGLE."  ;J=12 :"THE LOUDNESS OF A SOUND IS DUE TO ITS:":S1 "AMPLITUDE OFITS WAVES.": "PERIOD OF VIBRATION.": "FREQUENCY.": "WAVELENGTH.":  "TIMBRE.":  B"THE AMPLITUDE OF THE WAVES WILL SET THE LOUDNESS OF THE SOUND." ; <J=14:"IN A SIMPLE CAMERA THE SHUTTER SPEED IS SET TO 1/50s GIVING A CORRECT FILM EXPOSURE FOR A GIVEN IRIS DIAPHRAGM OPENING."''"HOW MUST THE EXPOSURE TIME BE CHANGED IF THE IRIS IS OPENED BYTWO STOPS?":S1 U"TO 1/200 s.": Z"TO 1/100 s.": _"TO 1/10 s.": d"TO 1/25 s": i"NOT AT ALL.": n"THE IRIS DIAPHRAGM OF A CAMERA ADMITS TWICE AS MUCH LIGHT FOR EACH STOP OPENED. TWO STOPS WILLLET IN FOUR TIMES AS MUCH LIGHT SO THE SHUTTER SPEED SHOULD BE INCREASED FROM 1/50 s TO 1/200 sTO COMPENSATE."  J=16:"MAINS LOW VOLTAGE POWER UNITS COMPRISE A STEPDOWN TRANSFORMER A RECTIFIER AND A CAPACITOR."''"WHICH OF THE CIRCUITS SHOWN HAS THESE COMPONENTS ARRANGED IN THECORRECT MANNER?" M=04:6+40(*M,91[-502*(M=1M=3):16,0:N=03:11 +N+6*(M=1M=3),4+5*M;"":2,0:2,-1:3,-3:1,-1:0,-3:-4,-4:-3,0:(N=3):-2,2:0,1:1,1:N:0:6+40(*M,557-502*(M=1M=3):16,0 72H+40(*M,83S-480*(M=1M=3):-24,0:N=01:-2,0:-2,-1:-3,-3:-1,-1:0,-3:4,-4:3,0:(N=1):2,2:0,1:-1,1:N:0:72H+40(*M,63?-480*(M=1M=3):-24,0 67C+40(*M,83S-480*(M=1M=3):(M=0);0,-20:11 ,7;"";10 ,11 ;"";11 ,29;"";12 ,18;"";12 ,28;"";17,12 ;"";18,13 ;"";18,23;"" M:S2 21,9 ;: 15,4;: 21,19;: 15,14;: 15,24;: Ҕ"THE SECONDARY OUTPUT MUST FIRST PASS THROUGH THE RECTIFIER AND THEN BE SHUNTED BY THE CAPACITORWHICH WILL ACT AS A RESERVOIR OFELECTRIC CHARGE."  FJ=14:"WHICH OF THE LENSES SHOWN IN THEDIAGRAM IS CONVERGENT?" )114r,80P:0,-502:20,0:0,502,-/3:-20,0:64@,80P:0,-502,-/3:20,0:0,502,-/3:-20,0:36$,80P:0,-502,/4:0,502,-/2 208,80P:0,-502,-/2:20,0:0,502,/4:-20,0:158,80P:0,-502,-/3:20,0:0,502:-20,0 S2 10 ,3;: "10 ,9 ;: '10 ,15;: ,10 ,21;: 110 ,27;: 6r"A QUICK WAY TO TELL IS TO SEE IFTHE MIDDLE IS FATTER THAN THE EDGES; IF IT IS THEN THE LENS IS CONVERGENT." g hJ=16:RS=0.1}L*(*90Z+10 ):VO=.1}L*(*90Z+10 ):"WHAT CURRENT FLOWS IN A RESISTOROF ";RS;" WHEN ";VO;" V ARE APPLIED"'"TO IT?":S1 *Z$=(VO/RS)+".0000":Z$(4);" A": )Z$=(RS/VO)+".000":Z$(4);" A": RS*VO;" A": RS/10 ;" A": (rs-vo);" A": p"THE CURRENT IS FOUND BY DIVIDINGTHE VOLTAGE BY THE RESISTANCE. ELECTRIC CURRENT IS MEASURED IN AMPERES (A)."  CJ=1:"WHICH OF THE FOLLOWING IS A VECTOR QUANTITY?":S4 K=1:"MOMENTUM.": K=1:"FORCE.":  "HEAT.": C"ONLY FORCE AND MOMENTUM HAVE DIRECTION AS WELL AS MAGNITUDE." / 0J=3:"A BODY MOVES IN A STRAIGHT LINE AT A UNIFORM SPEED IN SPACE."''"WHICH OF THE FOLLOWING COULD CAUSE IT TO CHANGE DIRECTION?":S4 I&K=1:"A CHANGE IN MOMENTUM.": N"A CHANGE OF ENERGY.": S""A CHANGE IN ITS TEMPERATURE.": bl"ONLY A CHANGE OF MOMENTUM COULD CHANGE THE BODY'S DIRECTION OF MOTION, i.e. THE APPLICATION OF A FORCE."  >J=4:"WHICH OF THESE IS AN EXAMPLE OF A 'COUPLE'?":S4 %K=1:"A PROPELLER TURNING.": .K=1:"TURNING A RADIO CONTROL KNOB.": %K=1:"TURNING A WATER TAP.": b"ALL THREE APPLY AN EQUAL BUT OPPOSITLY SENSED TURNING MOMENT ABOUT A CENTRAL TURNING POINT."  OJ=6:"WHICH OF THE FOLLOWING IS A UNIQUE PROPERTY OF A LIQUID.":S4 8"IT TAKES THE SHAPE OF THE VESSEL HOLDING IT.": 8"IT TRANSMITS PRESSURE EQUALLY IN ALL DIRECTIONS.": HK=1:"IT IS ALMOST INCOMPRESSIBLE YET IS EASILY DEFORMED.": *n"MANY LIQUID PROPERTIES ARE ALSO FOUND IN GASES AND SOLIDS. CARE MUST BE TAKEN WITH QUESTIONS OF THIS KIND." [ \IJ=8:"WHICH OF THESE CAN BE USED FOR MEASURING TEMPERATURE?":S4 uK=1:"A THERMISTOR.": zK=1:"A PYROMETER.": %K=1:"A BI-METALLIC STRIP.": "ALL THREE ARE USED."''"THE THERMISTOR FOR TEMPERATURES NEAR TO NORMAL AMBIENT VALUE, THE PYROMETER FOR THE FURNACE TEMPERATURES AND THE BI-METALLICSTRIP FOR A WIDE TEMPERATURE RANGE."  ?J=10 :"THE BOILING POINT OF A LIQUID ISLOWERED BY:":S4 'K=1:"REDUCING THE PRESSURE.": "DISSOLVED SUBSTANCES.": "HEATING SLOWLY.": "ONLY REDUCING THE PRESSURE ON A LIQUID WILL LOWER ITS BOILING POINT. EVERYTHING ELSE EITHER DOES NOT AFFECT IT OR WILL RAISEIT." # $]J=9 :"THE TEMPERATURE SENSING ELEMENT IN A DIAL TYPE OF THERMOMETER ISUSUALLY A:":S4 ="K=1:"BIMETALLIC STRIP.": B"RESISTANCE WIRE.": G#"A MERCURY CONTROLLED BELLOWS.": VB"BI-METALLIC STRIPS ARE RELIABLE,INEXPENSIVE AND ROBUST IN USE."  J=12 :"A HIGH PITCHED BUZZER IS PUT IN A BELL JAR AND THE AIR SLOWLY DRAWN OUT BY A VACUUM PUMP."''"THE SOUND WILL:":S4 -K=1:"FADE AWAY SLOWLY TO NOTHING.": 8"SLOWLY FALL IN PITCH AS THE AIR IS PUMPED OUT.": 0"GROW FAINTER AND THE PITCH WILL FALL.": "THE AIR IN THE BELL JAR IS THE MAIN CARRIER OF THE SOUND AND ASIT IS REMOVED THE SOUND WILL DIEAWAY ALTOGETHER. NO CHANGE IN PITCH SHOULD BE HEARD."  BJ=13 :"WHICH OF THESE STATEMENTS IS TRUE OF LIGHT?":S4 XK=1:"IT HAS THE HIGHEST VELOCITY OF ALL MOVING THINGS IN A VACUUM.":  ;K=1:"IT IS AN ELECTROMAGNETIC VIBRATION.": 8"LIGHT TRAVELS 1000 TIMES FASTER THAN SOUND.": "CERTAINLY THE VELOCITY OF LIGHT IS A THEORETICAL MAXIMUM AND ALLELECTROMAGNETIC VIBRATIONS MOVE AT THE SPEED OF LIGHT WHEN IN A VACUUM." (7'"LIGHT TRAVELS SOME 100000 TIMES FASTER THAN SOUND." O PmJ=14:"WHEN A LIGHT RAY IS REFRACTED ATA PLANE SURFACE, AS SHOWN BELOW,FOR A REFRACTIVE CONSTANT. n:" ZN=06:15+N,23;6;" ":N:178,568:73I,0:184,88X:32 ,-32 :23,-46. d 216,88X:0,-65A:216,68D:-8,-4,/2:216,38&:6,3,/2:12 ,26;"i";12 ,28;"AIR";19,28;6;"r";21,23;"GLASS";11 ,0;:s4 i!K=1:"SIN i/SIN r = n.": naK=1:"THE RATIO OF THE"'" INCIDENT RAY TO"'" REFRACTED RAY"'" VELOCITIES IS n.": saK=1:"THE NORMAL, THE"'" REFRACTED AND THE"'" INCIDENT RAYS ARE"'" ALL COPLANAR.": $"ALL THREE STATEMENTS ARE TRUE. "  J=16:"THE RESISTANCE OF A CONDUCTOR USUALLY RISES AS THE TEMPERATUREINCREASES."''"THUS WHEN A ELECTRIC LIGHT BULB IS SWITCHED ON:":S4 ?K=1:"ITS INITIALLY LOW RESISTANCE RISES SHARPLY.": D"THE CURRENT IS LIMITED BY THE FILAMENT'S INITIAL RESISTANCE.": 8"ITS WATTAGE INCREASES AS THE FILAMENT HEATS UP.": "THERE IS A SURGE OF ELECTRIC CURRENT ON FIRST SWITCHING ON THE LAMP. THE HEAT THIS CURRENT GENERATES QUICKLY RAISES THE FILAMENT TEMPERATURE TO A WHITE HEAT." '"AT THE SAME TIME THE RESISTANCE OF THE FILAMENT RISES SHARPLY TOLIMIT THE CURRENT TO A VALUE WELL BELOW THAT OF THE INITIAL SURGE. THE POWER CONSUMED BY THELAMP IS THUS REDUCED AS IT GETS TO ITS WORKING TEMPERATURE."  J=17:"A UNIFORM MAGNETIC FIELD HAS A PIECE OF HARDENED STEEL PLACED IN IT. WHICH OF THE FOLLOWING EVENTS HAPPEN?":S4 18K=1:"THE STEEL BECOMES A PERMANENT MAGNET.": 6dK=1:"THE MAGNETIC POLES INDUCED IN THE STEEL ARE THE OPPOSITE OF THE FIELD POLARITY.": ;BK=1:"THE STEEL EXPERIENCES A SMALL TEMPERATURE RISE.": J"THE MAGNETIC FIELD WILL INDUCE PERMANENT MAGNETISM IN THE STEELBECAUSE IT IS FERROMAGNETIC AND ITS HARDNESS ALLOWS IT TO RETAINTHE MAGNETISM AFTER REMOVAL FROMTHE FIELD." T'"THE FIELD INDUCES A REVERSE POLARITY IN THE STEEL, i.e. THE NORTH DIRECTION OF THE FIELD CREATES A SOUTH POLE AND THE CONVERSE IS TRUE OF THE SOUTH DIRECTION OF THE FIELD." ^'"DURING THE MAGNETISATION WORK ISDONE BY THE FIELD ON THE STEEL AND THIS PRODUCES A SMALL RISE IN TEMPERATURE IN THE STEEL." { |FJ=18:"THE IRON CORE USED IN SOLENOIDS HAS THE EFFECT OF:":S4 CK=1:"CONCENTRATING THE MAGNETIC FIELD IN THE COIL.": -"REDUCING HEAT LOSSES FROM THE DEVICE.": ;"CONTROLLING THE POLARITY OF THE ELECTROMAGNETISM.": "A SOFT IRON CORE CONCENTRATES THE MAGNETIC FIELD IN THE COILS SUBSTANTIALLY AND THIS INCREASESTHE MAGNETIC ATTRACTION OF THE DEVICE."  OJ=8:"CONVECTION CURRENTS EXIST IN A LIQUID BEING HEATED BECAUSE:":S4 &K=1:"THE LIQUID IS MOBILE.": 9K=1:"THE LIQUID CHANGES VOLUME ON HEATING.": "HEAT RISES.": m"EVIDENTLY THE LIQUID MUST BE MOBILE TO SUPPORT ANY KIND OF CURRENTS, INCLUDING CONVECTION CURRENTS." '"MOST LIQUIDS EXPAND ON HEATING AND SO THEIR DENSITIES GET LESS.THIS IN TURN CAUSES COLDER PORTIONS OF THE SAME LIQUID TO DISPLACE THE LESS DENSE LIQUID UPWARDS CREATING CONVECTION." C DOJ=21:"WHICH OF THESE STATEMENTS ABOUT THE ATOMIC NUCLEUS IS TRUE?":S4 ];"ONE ELECTRON IS THE SUM OF A PROTON AND A NEUTRON.": b4"ELECTRONS HAVE UNIT CHARGE AND UNIT MASS.": gFK=1:"THE NUCLEUS CONTAINS ONLY PROTONS AND NEUTRONS.": vY"IN THE ATOMIC NUCLEUS THERE ARE ONLY THE TWO PRIMARY PARTICLES- PROTONS AND NEUTRONS."  =J=16:"WHEN 16 V ARE APPLIED TO A 12 RESISTOR:":S4 #"A 0.75 A CURRENT IS PRODUCED.": "POWER PRODUCED IS 1.33 W.": AK=1:"THE RESISTANCE PASSES A TOTAL OF 20 C IN 15 s.": :"THE CURRENT IN THE RESISTOR IS:"''" 16/12 = 1.33 A." Q'"DURING 15 SECONDS THAT CURRENT WILL PASS:"''" 15*1.33 = 20 COULOMBS (C)."    >J=20:"IN A CATHODE RAY TUBE (CRT) THE ELECTRONS:":S4 %7K=1:"GO FROM THE CATHODE TO THE ANODE.": *#"MOVE WITH THE SPEED OF LIGHT.": /""FOLLOW A STRAIGHT LINE PATH.": >"THE CATHODE IS NEGATIVE RELATIVETO THE ANODE AND AS ELECTRONS HAVE A NEGATIVE CHARGE THEY ARE REPELLED AWAY FROM THE CATHODE TOWARDS THE ANODE." o %M=(*5+1) %&:Y=04:A$(3*Y+13*Y+3);:V+5*N$(Y+M)+20:N$(Y+M)=1Q$=A$(3*Y+1) %0Y:S3 %M=(*5+1) %sY=04:V+5*N$(M+Y)+20:A$(3*Y+1):N$(Y+M)=1Q$=A$(3*Y+1) %Y:S3 % M=1+3*(*2) %:TT=0:Y=02:B$(3*Y+1);". ";:K=0:V+5*M$(M+Y)+20:TT=TT+(Y+2)*(K>0) %Y:Q$=C$(TT-1):S3 %2,0;3;"A";9 ;"B";15;"C";21;"D";27;"E":,," 1,2,3";8;"1,2";14;"2,3";21;"1";27;"3":" ALL ONLY ONLY ONLY ONLY":" RIGHT RIGHT RIGHT RIGHT RIGHT" %r4,117u:238,0:4,149:238,0:4,165:238,0 %AO=4244480:O,165:0,-480:O &: &H%W$:RT=1q$=" ":9840p& &R9N(J)=N(J)+1:W$=Q$W$=(Q$+32 )9890& &\20,0;"NO- ";Q$; &f9" YOUR SCORE IS ";ANS;"/";Q:"PRESS 'ENTER'":0 &pW$Q$W$(Q$+32 )RT=0:6:6::V+502:"ENTER 'Y' TO REVIEW THE QUESTIONPRESS 'ENTER' TO GO ON.";I$:I$="Y"I$="y"RT=1:9870& &zQ=5029900& &*V=V+100d:Q=(V-900)/100d &A7:7::"QUESTION ";Q;"."::Q34"9700% &V &WANS=ANS+1:20,0;"CORRECT- ";Q$;".";:S(J)=S(J)+1:9830f& &b20,0;"PRESS 'ENTER' FOR TEST RESULTS.":0::10 ,0;"YOU HAVE:- "; &S=ANS:2;("FAILED-"S23);("UNGRADED"S8);("GRADE "S>8S<23);("E"S>8S16);("D"S>16S23);0;("PASSED-GRADE "S>23);("C"S>23S34");("B"S>34"S41));("A"S>41)) &M17,0;"PRESS 'ENTER' FOR AN ANALYSIS OFYOUR TEST RESULTS":P$: &J=021:J,0;1;("MECHANICS"J=0);0;("Units-Vectors-Density"J=1);("Particulate Matter"J=2);("Motion"J=3);("Static Systems"J=4);("Work-Energy-Power"J=5);("Pressure-Flotation"J=6); &ԍJ,0;1;("HEAT"J=7);0;("Nature-Units-Transfer"J=8);("Expansion"J=9 );("Heating Changes"J=10 ); &ޛJ,0;1;("WAVES-SOUND-LIGHT"J=11 );0;("Vibrations-Waves"J=12 );("Electromagnetic Waves"J=13 );("Optics"J=14); &J,0;1;("ELECTRICITY-MAGNETISM"J=15);0;("e.m.f.-Currents"J=16);("Magnetism"J=17);("Electromagnetics"J=18);("Domestic Electricity"J=19);("Electrostatic Charges"J=20);("The Atom"J=21); &DI=-1:J>0J7J11 J15I=S(J)/N(J) &J,22;2;("VERY BAD"I=0);("POOR"I>0I.3);("AVERAGE"I>.3I.6);("GOOD"I>.6I.85Y);1;5;("EXCELLENT"I>.85Y); 'J '0::S<45-6,0;"YOU HAVE NOT REACHED GRADE 'A' STANDARD."::"YOU ARE ADVISED TO REPEAT THIS TEST UNTIL YOU DO ATTAIN THAT GRADE.";16,0;"PRESS 'ENTER' TO TRY AGAIN.":5000:502 'q"YOU HAVE REACHED A GOOD STANDARDIN THIS TEST. START THE TAPE AND THEN PRESS 'ENTER' TO LOAD THE NEXT ONE." ' "" '"PHYSICS 2"1 N 2514325143M123321AA. B. C. D. E. B 1. 2. 3. qq qHn%%H&%%CD EB C Av Zd&%D?333$0%kZ0.65217391.000QEWIsPiYPHYSICS 1 yy{{ A0:0:0:0:5:5:0: 5,8;" P H Y S I C S "''15;"3";11 ,1;"THIS PROGRAM TAKES ABOUT THREE "''" MINUTES TO LOAD COMPLETELY" Y2:255,0:0,175:-255,0:0,-175 2*5:5:0,0:"" <"PHYSICS 1"1 4 PANEL 1 >>f @ 0:5:5::3,12 ;"PAPER I";''9 ;"REVISION TEST";10 ,1;"YOU ARE NOT PERMITTED THE USE OF AN ELECTRONIC CALCULATOR OR ANY AID TO HELP WITH NUMERICAL CALCULATIONS."''" USE SPARE PAPER FOR ROUGH WORK IF NECESSARY." 5:5:"" <"PANEL 1"1 ^PANEL 2 88e: 5:5:0: i2,0;" YOU ARE NOW ABLE TO REACH A GOOD STANDARD IN THE A.E.B. PAPER 1 EXAMNATION." ''" THE NEXT THREE PROGRAMS ENSURE YOUR SUCCESS BY IMPROVING YOUR FAMILIARITY WITH THE SUBJECT AND INCREASING YOUR CONFIDENCE IN ANSWERING QUESTIONS OF THIS KIND." '" PAY PARTICULAR ATTENTION TO PERFORMANCE ANALYSIS AT THE END AND CONSULT THE RELEVANT TEACHING PROGRAM TO IMPROVE ANY PARTICULAR WEAKNESS THAT MAY BE POINTED OUT." 2"5:0,0;:"" <"PANEL 2"1 PHYSICS 3 o"mX&o,236099\,100d:23562 \,1 :BX=8000@ l0:10 ,3;" S T O P T H E T A P E ";13 ,4;"PRESS ANY KEY TO GO ON." #.5,34":""20  10 q:''" TO ANSWER THE QUESTIONS:"''" 1. PRESS THE LETTER FOR THE ANSWER YOU CHOOSE."''" 2. PRESS 'ENTER'." #G'''"YOU CAN CHANGE YOUR ANSWER BY USING 'DELETE' IN THE USUAL WAY." (E200:20,1;"NOW PRESS 'ENTER' TO START.":0 2:N$="2514325143":M$="123321":A$="A. B. C. D. E. ":B$="1. 2. 3. "::S(22):N(22):Q=1:"QUESTION 1."::ANS=0 136,123{:0,-24:4,0:BX:30,0:BX:4,0:0,24:-117u,0:5,23;"1.4 V";6,24;"";8,19;RS;" ";RS;" ";9 ,24;"";10 ,23;"2.0 V" @S1 M0.3/RS;" A.": R#.01z# =*(340T/RS);" A.": W%.01z# =*(200/RS);" A.": \#.01z# =*(140/RS);" A.": aRS/2;" A.": fd"THE CELLS ARE IN OPPOSITION SO THE EFFECTIVE VOLTAGE APPLIED TOTHIS CIRCUIT IS 2.0-1.4 = 0.6 V." p?'"THE CURRENT IS:"''" 0.6/(2*";RS;") = ";.3/RS;" A."  J=14:"A TANK IS FILLED TO A DEPTH OF 17 m WITH WATER OF REFRACTIVE CONSTANT OF 1.33."''"WHAT IS THE APPARENT DEPTH OF WATER WHEN VIEWED FROM ABOVE?":S1  "12.8 m.":  "22.6 m.":  "17 m.":  "5.6 m.":  "22.5 m.": q"THE APPARENT DEPTH IS THE REAL DEPTH DIVIDED BY THE REFRACTIVE INDEX OF THE LIQUID:"''" 17/1.33 = 22.6 m." C'"THE ANSWER OF 22.5 m, WHICH IS CLOSE, IS NOT ACCURATE ENOUGH."  SJ=17:"A SOFT IRON 'KEEPER' IS USED WITH PERMANENT MAGNETS BECAUSE:":S1 3"SOFT IRON HAS A HIGH MAGNETIC PERMEABILITY.": N"IT RETAINS ONLY A LITTLE OF THE PERMANENT MAGNETISM WHEN REMOVED.": A"THE MAGNET MUST BE SHIELDED FROM LOCAL MAGNETIC FIELDS.": $3"IT STOPS THE MAGNETISM FROM LEAKING AWAY.": )4"IT GIVES MECHANICAL SUPPORT TO THE MAGNET.": ."THE HIGH PERMEABILITY OF SOFT IRON MEANS THAT THE MAGNETIC FIELD PASSES THROUGH THE IRON WITH MUCH GREATER EASE THAN IN AIR." 8B'"THE EFFECT OF THIS IS TO 'KEEP' THE MAGNETIC DOMAINS ALIGNED." _ `LJ=18:"WHEN THE NUMBER OF TURNS IN A SOLENOID IS DOUBLED THE:":S1 y""MAGNETIC FIELD IS QUARUPLED.": ~ "MAGNETIC FIELD IS DOUBLED.": "CURRENT IS HALVED.": "POWER IS DOUBLED.": "HEAT LOSSES ARE HALVED.": b"THE MAGNETIC FIELD PRODUCED BY ASOLENOID IS PROPORTIONAL TO THE SQUARE OF THE NUMBER OF TURNS."  JJ=19:"THE FREQUENCY OF THE DOMESTIC ELECTRICITY SUPPLY IS:":S1 "50 Hz.": "60 Hz.": "240 cycles per second.": "240 V.": "110 Hz.": 7"IN THE UNITED KINGDOM THE MAINS FREQUENCY IS 50 Hz." ' (pJ=20:"TWO LIGHT ALUMINIUM SPHERES WITHTHE SAME ELECTROSTATIC CHARGE WHEN BROUGHT CLOSE TOGETHER:":S1 A"WILL REPEL EACH OTHER.": F"WILL ATTRACT.": K!"WILL NEUTRALIZE EACH OTHER.": P"DISCHARGE EACH OTHER.": U:"WILL INCREASE THEIR CHARGES BY MUTUAL INDUCTION.": Z""LIKE CHARGES REPEL EACH OTHER."  J=21:"A RADIOACTIVE SUBSTANCE SHOWS ANINITIAL ACTIVITY OF 18620 COUNTSPER SECOND AND THIS FALLS 4650 COUNTS PER SECOND AFTER 12 DAYS.WHAT IS THE COUNT RATE AFTER 36 DAYS FROM THE START?":S1 "290": "1550": "6210": "500": "517": T"THE INITIAL RATE IS REDUCED TO AQUARTER IN 12 DAYS SO THE 'HALF-LIFE' IS 6 DAYS." Ȏ'"36 DAYS COVERS A TOTAL OF SIX 'HALF LIVES, i.e. THE INITIAL ACTIVITY IS HALVED SIX TIMES OVER:"''" 18620*() = 290 COUNTS/SECOND."  J=12 :"WHAT PERIOD OF OSCILLATION DOES A LOADED SPRING HAVE WHEN IT DOES 1237 COMPLETE OSCILLATIONS IN 3 MINUTES AND 37 SECONDS?":S1 "0.1673 s":  "0.335 s":  "0.084 s":  "5.975 s": "0.182345 s": "q"THE PERIOD IS THE TIME FOR ONE COMPLETE OSCILLATION. IN THIS CASE IT IS:"''" (3*60 + 27)/1237 = 0.1673 s." S TrJ=8:"WHICH OF THE FOLLOWING DESCRIBESTHE TEMPERATURE OF PURE MELTING ICE AT A PRESSURE OF 101.3 kPa?":S1 m"IT IS A FIXED POINT.": r1"IT IS THE FREEZING POINT OF PURE WATER.": w!"IT IS AN ABSOLUTE CONSTANT.": |"IT IS 273 K EXACTLY.": ?"IT IS THE TEMPERATURE WHEN WATER LOSES ALL ITS HEAT.": _"THIS IS A FIXED POINT IN THE TEMPERATURE SCALE AND IS 0C EXACTLY (APPROX. 273.15 K)."  nJ=10 :"THE PROCESS IN WHICH A SOLID CHANGES DIRECTLY INTO A GAS WITHOUT MELTING IS CALLED:":S1 "SUBLIMATION.": "VAPORISATION.": "IONISATION.": "DISINTEGRATION.": "VOLATILISATION.": ["FROM THE SOLID DIRECTLY INTO A GAS:- SUBLIMATION. FROM A GAS TOA SOLID:- CONDENSATION."  CJ=14:"A PINHOLE CAMERA FORMS INVERTED IMAGES BECAUSE:":S1 57"LIGHT TRAVELS IN A STRAIGHT LINE PATH IN AIR.": :4"THE PINHOLE ONLY LETS A FEINT LIGHT THROUGH.": ?5"THE HOLE IS BETWEEN THE IMAGE AND THE OBJECT.": DA"THE PINHOLE IS SMALL COMPARED TO THE WAVELENGTH OF LIGHT.": I0"THERE IS NO LENSE TO CHANGE THE IMAGE.": N~"LIGHT TRAVELS IN STRAIGHT LINES IN AIR. IT WOULD BE DIFFICULT TOEXPLAIN THE ACTION OF A PINHOLE CAMERA ON ANY OTHER BASIS."  dJ=16:"WHAT IS THE POWER DISSIPATED BY A 1.37 RESISTOR WHEN 18.6 A PASS THROUGH IT?":S1 "474 W": "470 W": "25.5 W": "13.6 W": "25.48 W": Q"THE POWER IN THE RESISTOR IS:"''" R*I = 1.37*(18.6)"''" = 474 W." %'"GREATER ACCURACY IS UNJUSTIFIED."  J=6:VL=100d*(*9 +1):VLB=VL/(*3+2):VL;" cm OF AIR AT 101.3 kPa IS"'"COMPRESSED TO ";VLB;" cm."''"WHAT PRESSURE INCREASE HAS BEEN PRODUCED IN THE COMPRESSED AIR?":S1 )101.3J*VL/VLB-101.3J;" kPa": 101.3J*vl/vlb;" kPa": vl/vlb;" kPa": )101.3J*vlb/vl+101.3J;" kPa": 101.3J+vl/vlb;" kPa": ]"THE PRESSURE RISES TO:"''" 101.3*";VL;"/";VLB;" = ";:PR=101.3J*VL/VLB:PR;" kPa." O'"THE INCREASE IN PRESSURE IS:"''" ";PR;"-101.3 = ";PR-101.3J;" kPa." G HJ=3:"A BODY INCREASES ITS VELOCITY FROM u TO v m/s OVER A DISTANCE OF d METRES. WHICH EQUATION IS MOST SUITABLE FOR CALCULATING THE ACCELERATION INVOLVED?":S1 a"v-u= 2ad": f "d=at": k "d=at": p "v=at": u "a=2d/u": z"GIVEN THE INITIAL VELOCITY, u, AND THE FINAL VELOCITY, v, AS WELL AS THE DISTANCE OVER WHICH THE CHANGE IN VELOCITY OCCURS, dTHE MOST DIRECT EQUATION TO USE FOR CALCULATING THE ACCELERATIONIS:" L'" v-u=2as."''"THIS GIVEs THE ACCELERATION AS:"''" a = (v-u)/2d"  J=14:"WHAT IS THE VELOCITY OF LIGHT INPERSPEX OF REFRACTIVE CONSTANT 1.48 WHEN THE VELOCITY IN AIR IS300000 km/s":S1 "203000 km/s": "202700 km/s": "156000 m/s": "444000 km/s": "300000 km/s": I"THE VELOCITY OF LIGHT IN PERSPEXIS:"''" 300000/1.48 = 203000 km/s." "'"202700 km/s IS OVER ACCURATE."  QJ=8:"WHICH OF THE FOLLOWING HAS THE BEST THERMAL INSULATION VALUE?":S1 )"A VACUUM.": ."FIBREGLASS.": 3"MICAFIL.": 8"DOUBLE GLAZING.": = "WOOL.": BZ"A VACUUM ALLOWS ONLY RADIANT ENERGY TO PASS, CONDUCTION IS COMPLETELY ELIMINATED." s tgJ=16:"WHICH SET OF COMPONENTS WOULD NORMALLY BE FOUND IN A MAINS LOWVOLTAGE POWER UNIT?":S1 7"RECTIFIER, CAPACITOR, STEP- DOWN TRANSFORMER.": 7"RESISTOR, CAPACITOR, STEP- DOWN TRANSFORMER.": 7"RECTIFIER, RESISTOR, STEP- DOWN TRANSFORMER.": 2"RECTIFIER, RESISTOR, STEP-UP TRANSFORMER.": 2"CAPACITOR, RESISTOR, STEP-UP TRANSFORMER.": "THE STEP-DOWN TRANSFORMER BRINGSTHE MAINS 240 V a.c. DOWN TO A LOW VALUE, THE RECTIFIER CHANGESTHE LOW a.c. VOLTAGE INTO A d.c.VOLTAGE AND THE CAPACITOR HELPS TO GIVE A SMOOTH d.c. OUTPUT."  BJ=12 :"THE PITCH OF A MUSICAL SOUND IS DETERMINED BY:":S1 "FREQUENCY.": "THE AMPLITUDE.": "THE RESONANCE.": "THE TIMBRE.":  "THE VELOCITY OF THE SOUND.":  b"FOR A MUSICAL SOUND, i.e. ONE WITH A REGULAR WAVE PATTERN, THEPITCH IS SET BY THE FREQUENCY." ; <}J=14:"WHEN WHITE LIGHT SHINES ON CUT GLASS ALL THE COLOURS OF THE RAINBOW CAN BE SEEN. THIS IS BECAUSE: ":S1 UX"THE REFRACTIVE CONSTANT FOR GLASS IS DIFFERENT FOR THE DIFFERENT COLOURS.": Z"GLASS IS BI-REFRINGENT.": _."THE SHAPE OF THE GLASS IS ANGULAR.": d5"THE LIGHT IS REFLECTED BY THE CRITICAL ANGLE.": i""GLASS IS HIGHLY TRANSPARENT.": n"NEWTON'S EXPERIMENTS SHOWED THATWHITE LIGHT COULD BE DECOMPOSED INTO ALL THE COLOURS OF THE RAINBOW BECAUSE THE INDEX OF REFRACTION WAS DIFFERENT FOR EACH COLOUR."  _J=13 :"WHICH SET OF RADIATIONS ARE IN THE CORRECT ORDER OF DECREASING WAVELENGTH?":S1 1"INFRA-RED,ULTRA-VIOLET, GAMMA-RAYS.": 8"YELLOW LIGHT, X-RAYS, ULTRA-VIOLET RAYS.": 8"COSMIC RAYS, INFRA-RED RAYS, ULTRA-VIOLET RAYS.": 3"RED LIGHT, GREEN LIGHT, YELLOW LIGHT.": 1"INDIGO LIGHT, MAGENTA LIGHT, CYAN LIGHT.": ҃"INFRA-RED RAYS HAVE A LONGER WAVELENGTH THAN ULTRA-VIOLET RAYS AND GAMMA-RAYS HAVE A MUCH SHORTER WAVELENGTH THAN EITHER."  eJ=14:"AN OBSERVER ON EARTH SEES A PARTIAL ECLIPSE OF THE SUN. THE OBSERVER MUST BE:":S1 -"IN THE PENUMBRA OF THE MOON'S SHADOW.": ""ON THE EQUATOR.": '1"ON EITHER THE NORTH OR THE SOUTH POLE.": ,6"LOOKING TOWARDS THE SUN WITH MOON BEHIND HIM.": 19"SEEING THE SUN PARTLY COVERED BY THE PLANET MARS.": 6"AN ECLIPSE OF THE SUN IS CAUSED BY THE MOON COVERING A PART OR ALL OF THE VISIBLE SURFACE OF SUN. A PARTIAL ELCIPSE CAN ONLY BE SEEN FROM THE PENUMBRA REGIONOF THE MOON'S SHADOW." g h]J=19:"WHICH ELECTRICAL DEVICE IS ABLE TO RAISE THE MAINS VOLTAGE UP TO330000 V?":S1 "A STEP-UP TRANSFORMER.": "A STEP-DOWN TRANSFORMER.": "A RECTIFIER.": "A CAPACITOR.": "A POWER AMPLIFIER.": z"NORMALLY THE VOLTAGE IS REDUCED FROM 330000 V BUT THE CONVERSE OPERATION IS PRODUCED BY USING A STEP-UP TRANSFORMER."  AJ=1:"WHICH OF THESE STATEMENTS IS TRUE OF WATER?":S4 *K=1:"ITS MELTING POINT IS 0C.": *"IT HAS MINIMUM DENSITY IS AT 4C.": "IT EXPANDS ON MELTING.": ]"WATER CONTRACTS ON MELTING AND AT 4C ITS DENSITY IS GREATEST. THE MELTING POINT IS 0C." / 0J=3:"A WOODEN BALL AND AN IRON BALL OF THE SAME SIZE ARE BOTH FIRED DIRECTLY UPWARDS WITH THE SAME VELOCITY. WHICH OF THE FOLLOWINGIS A LIKELY RESULT?":S4 I8K=1:"THEY BOTH REACH ABOUT EQUAL HEIGHT.": NIK=1:"THEY BOTH HIT THE GROUND WITH ABOUT THE SAME VELOCITY.": SD"THEY BOTH HIT THE GROUND WITH ABOUT THE SAME KINETIC ENERGY.": b"NEGLECTING AIR FRICTION, BOTH BALLS WILL RISE TO THE SAME HEIGHT AND RETURN TO EARTH WITH THE SAME VELOCITY. THEIR KINETICENERGIES, HOWEVER, WILL NOT BE THE SAME BECAUSE THEIR MASSES ARE DIFFERENT."  AJ=4:"A CABLE LOADED WITH INCREASING TENSION WILL: ":S4 /"BREAK WHEN THE YIELD LOAD IS EXCEEDED.": 5"ALWAYS EXTEND IN PROPORTION TO THE TENSION.": MK=1:"REACH A TENSION WHICH WILL GIVE IT A PERMANENT STRETCH.": "AS THE TENSION REACHES THE YIELDVALUE, THE CABLE WILL TAKE ON A PERMANENT STRETCH. IT MAY NOT ALWAYS EXTEND IN PROPORTION TO THE LOADING TENSION NOR DOES IT HAVE TO BREAK WHEN THE YIELD LOAD IS EXCEEDED."  nJ=6:"WHEN A BOTTLE FULL OF AIR IS LOWERED, UPSIDE DOWN, INTO WATERTHE AIR IN THE BOTTLE WILL:":S4 .K=1:"SHRINK WITH INCREASING DEPTH.": B"AT HALF THE DEPTH OF THE TANK THE VOLUME WILL BE ONE HALF.": <"EXPLODE THE BOTTLE IF LOWERED TO A SUFFICIENT DEPTH.": *"AS THE DEPTH INCREASES THE AIR VOLUME WILL DIMINISH ACCORDING TO BOYLE'S LAW. THE PRESSURE AT HALF THE DEPTH OF THE TANK IS NOT NECESSARILY THAT WHICH WILL HALVE THE AIR VOLUME." 4'"THE PRESSURE INSIDE THE BOTTLE IS EQUAL TO THE PRESSURE OUTSIDESO THERE IS NO LIKELIHOOD OF THEBOTTLE EXPLODING BECAUSE OF THE DEPTH SUBMERGED." [ \aJ=8:"WARM AIR TENDS TO RISE AND CAUSEAIR CIRCULATION IN A ROOM."''"THIS IS BECAUSE:":S4 u-K=1:"AIR IS LESS DENSE WHEN WARM.": z9K=1:"AIR ALWAYS CONTRACTS ON BEING COOLED. ": "HEAT ALWAYS RISES": ="AIR WILL EXPAND ON WARMING AND SO ITS DENSITY WILL FALL."  %J=10 :"WATER BOILS WHEN:":S4 Y"THE ENERGY OF ITS MOLECULES EQUALS THE ENERGY OF THE AIR IN CONTACT WITH IT.": IK=1:"ITS VAPOUR PRESSURE IS EQUAL TO ATMOSPHERIC PRESSURE.": \K=1:"THE TEMPERATURE IS 100C AND THE PRESSURE IS ONE STANDARD ATMOSPHERE.": "THE KINETIC ENERGY OF THE WATER MOLECULES AND OF AIR MOLECULES IS DETERMINED BY THE TEMPERATUREAND IS THE SAME FOR BOTH AT THE SAME TEMPERATURE." N'"THE BOILING POINT IS, HOWEVER, DEPENDENT ON THE EXTERNAL (AIR) PRESSURE." # $QJ=9 :"IN THE IDEAL GAs EQUATION pv=RTTHE LETTER 'T' REPRESENTS THE:":S4 =+K=1:"TEMPERATURE MEASURED IN K.": B+K=1:"TEMPERATURE IN C + 273.15": G"TIME IN s.": VW"THE TEMPERATURE MEASURED IN K OR IN C + 273.15 IS USED IN THEIDEAL GAS EQUATION."  *J=12 :"A GUITAR STRING HAS A:":S4 0K=1:"TRANSVERSE MODE OF VIBRATION. ": "K=1:"NODE AT EACH END.": ;"SOUND WAVELENGTH EQUAL TO THE LENGTH OF THE STRING.": "VIBRATING STRINGS USUALLY HAVE A TRANSVERSE MODE OF VIBRATION WITH A NODE AT EACH END OF THE STRING. THE WAVELENGTH OF THE SOUND IT PRODUCES IS NOT A SIMPLE FUNCTION OF THE LENGTH OFTHE STRING, HOWEVER."  JJ=13 :"WHICH OF THE FOLLOWING IS TRUE ABOUT LIGHT AND SOUND?":S4 <K=1:"BOTH OBEY THE SAME LAWS OF REFLECTION.":  ?K=1:"THEY BOTH HAVE THE SAME LAWS OF REFRACTION.": 8"THE VELOCITY OF BOTH IS AN ABSOLUTE CONSTANT.": "BOTH LIGHT AND SOUND FOLLOW THE SAME LAWS OF REFLECTION AND OF REFRACTION. THEIR VELOCITIES DO DEPEND ON THE MEDIUM THEY TRAVELIN, HOWEVER." O PEJ=14:"WHEN A SOUND BEAM IS REFLECTED FROM A WALL, THE:":S4 iEK=1:"ANGLE OF INCIDENCE EQUALS THE ANGLE OF REFLECTION.": n;K=1:"VELOCITY OF THE SOUND IS NOT CHANGED.": sQ"PITCH OF THE REFLECTED SOUND CHANGES WITH THE ANGLE OF REFLECTION.": "THE VELOCITY REMAINS CONSTANT AND THE INCIDENT AND REFLECTED ANGLES ARE EQUAL. HOWEVER THE FREQUENCY OF THE SOUND REMAINS UNCHANGED BY THE REFLECTION."  J=16:"WHEN A STEEL AND AN ALUMINIUM WIRE ARE HELD CLOSE TOGETHER, WITHOUT TOUCHING, IN A CLOTH SOAKED IN SALT WATER:":S4 ?K=1:"AN e.m.f. DEVELOPS BETWEEN THE TWO WIRES.": GK=1:"A CURRENT CAN BE MADE TO FLOW FROM ONE TO THE OTHER.": #"THE ALUMINIUM WIRE GETS WARM.": "AN E.M.F. DEVELOPS BETWEEN TWO DISSIMILAR METALS IN SALT WATER.A CURRENT CAN BE MADE TO PASS FROM ONE WIRE TO THE OTHER AS IONS IN THE SALT WATER CAN CARRYTHE CHARGE." V'"NO HEAT IS DEVELOPED IN THE ALUMINIUM WIRE SO THERE IS NO TEMPERATURE RISE."  J=17:"WHEN TWO PARALLEL WIRES CLOSE TOEACH OTHER CARRY AN ELECTRIC CURRENT IN THE SAME DIRECTION, THEY WILL TEND TO:":S4 1"K=1:"REPEL EACH OTHER.": 6 "REINFORCE THEIR MAGENTISM.": ;1"ASSIST THE FLOW OF CURRENT IN EACH OTHER.": J"THEY WILL REPEL EACH OTHER AND AT THE SAME TIME REINFORCE THEIRMAGNETISM. THE FLOW OF ELECTRIC CURRENT IN ONE WIRE WILL TEND TOPREVENT THE FLOW IN THE OTHER WHEN THE CURRENT IS CHANGING." { |AJ=18:"A SOFT IRON CORE IS PUT INTO SOLENOIDS TO:":S4 +K=1:"CONCENTRATE THE MAGNETISM.": 3"DISSIPATE THE HEAT PRODUCED IN THE COILS.": ="DIRECT THE POLARITY OF THE ELECTROMAGNET PRODUCED.": "THE CONCENTRATING EFFECT OF THE SOFT IRON CORE ON THE MAGNETISM PRODUCED BY THE SOLENOID IS VERYIMPORTANT TO ITS EFFICIENCY." j'"THE DISSIPATION OF HEAT AND THE DIRECTION OF THE MAGNETIC FIELD ARE NOT DIRECTLY AFFECTED BY THECORE."  2J=20:"WHEN AN ION MOVES IN A VACUUM:":S4 .K=1:"A MAGENTIC FIELD IS PRODUCED.": 9K=1:"AN ELECTRIC CURRENT APPEARS TO FLOW.": DK=1:"A POTENTIAL DIFFERENCE HAS BEEN APPLIED TO IT.": "A MOVING CHARGE GENERATES A MAGNETIC FIELD AND CREATES AN ELECTRIC CURRENT. AN ELECTRIC FIELD IS NEEDED TO MAKE IT MOVE." C D-J=10 :"WHEN A LIQUID EVAPORATES:":S4 ],K=1:"ITS HEAT CONTENT INCREASES.": b'K=1:"ITS TEMPERATURE FALLS.": g<K=1:"ITS MOLECULES COLLIDE MORE FREQUENTLY.": v"THE INCREASE IN HEAT CONTENT IS DUE TO THE GREATER DISORDER OF THE MOLECULES IN THE GASEOUS STATE. THE TEMEPERATURE NEED NOTFALL BECAUSE OF EVAPORATION AND THE MOLECULES WILL COLLIDE LESS IN THE GASEOUS STATE."  MJ=21:"WHICH OF THE FOLLOWING ARE TRUE OF RADIOACTIVE EMISSIONS?":S4 0"RADIOACTIVITY ALWAYS PRODUCES BETA-RAYS.": 8K=1:"ALPHA-RAYS HAVE A POSITIVE CHARGE.": ˈK=1:"WHEN THE RADIATION IS PASSED THROUGH A MAGNETIC FIELD, ALPHA-RAYS GO ONE WAY AND BETA-RAYS GO THE OTHER.": <"RADIOACTIVE DECAY DOES NOT GIVE BETA-RAYS IN EVERY CASE." B'"ALPHA RAYS WILL HAVE A POSITIVE ELECTRIC CHARGE IN ALL CASES."    RJ=14:"A RAY SUFFERING TOTAL INTERNAL REFLECTION AT A GLASS SURFACE:":S4 %8K=1:"IS REFLECTED WITH NO LOSS OF ENERGY.": *.K=1:"OBEYS THE LAWS OF REFLECTION.": /0"CANNOT BE SEEN FROM OUTSIDE THE GLASS.": >Y"THE RAY MAY PASS OUT FROM THE GLASS THROUGH SOME OTHER SURFACEAND SO COULD BE SEEN." H'"TOTAL INTERNAL REFLECTION OBEYS THE LAWS OF REFLECTION AND IS EXCEPTIONAL IN SUFFERING NO ENERGY LOSS, i.e. THE REFLECTED RAY APPEARS JUST AS BRIGHT AS THE INCIDENT RAY." o @~0,4:40(,0:0,-7:-40(,0:0,3:23677}\,23677}\+40(: %M=(*5+1) %&:Y=04:A$(3*Y+13*Y+3);:V+5*N$(Y+M)+20:N$(Y+M)=1Q$=A$(3*Y+1) %0Y:S3 %M=(*5+1) %sY=04:V+5*N$(M+Y)+20:A$(3*Y+1):N$(Y+M)=1Q$=A$(3*Y+1) %Y:S3 % M=1+3*(*2) %:TT=0:Y=02:B$(3*Y+1);". ";:K=0:V+5*M$(M+Y)+20:TT=TT+(Y+2)*(K>0) %Y:Q$=C$(TT-1):S3 %2,0;3;"A";9 ;"B";15;"C";21;"D";27;"E":,," 1,2,3";8;"1,2";14;"2,3";21;"1";27;"3":" ALL ONLY ONLY ONLY ONLY":" RIGHT RIGHT RIGHT RIGHT RIGHT" %r4,117u:238,0:4,149:238,0:4,165:238,0 %AO=4244480:O,165:0,-480:O &: &H%W$:RT=1q$=" ":9840p& &R9N(J)=N(J)+1:W$=Q$W$=(Q$+32 )9890& &\20,0;"NO- ";Q$; &f9" YOUR SCORE IS ";ANS;"/";Q:"PRESS 'ENTER'":0 &pW$Q$W$(Q$+32 )RT=0:6:6::V+502:"ENTER 'Y' TO REVIEW THE QUESTIONPRESS 'ENTER' TO GO ON.";I$:I$="Y"I$="y"RT=1:9870& &zQ=5029900& &*V=V+100d:Q=(V-900)/100d &A7:7::"QUESTION ";Q;"."::Q34"9700% &V &WANS=ANS+1:20,0;"CORRECT- ";Q$;".";:S(J)=S(J)+1:9830f& &b20,0;"PRESS 'ENTER' FOR TEST RESULTS.":0::10 ,0;"YOU HAVE:- "; &S=ANS:2;("FAILED-"S23);("UNGRADED"S8);("GRADE "S>8S<23);("E"S>8S16);("D"S>16S23);0;("PASSED-GRADE "S>23);("C"S>23S34");("B"S>34"S41));("A"S>41)) &M17,0;"PRESS 'ENTER' FOR AN ANALYSIS OFYOUR TEST RESULTS":P$: &J=021:J,0;1;("MECHANICS"J=0);0;("Units-Vectors-Density"J=1);("Particulate Matter"J=2);("Motion"J=3);("Static Systems"J=4);("Work-Energy-Power"J=5);("Pressure-Flotation"J=6); &ԍJ,0;1;("HEAT"J=7);0;("Nature-Units-Transfer"J=8);("Expansion"J=9 );("Heating Changes"J=10 ); &ޛJ,0;1;("WAVES-SOUND-LIGHT"J=11 );0;("Vibrations-Waves"J=12 );("Electromagnetic Waves"J=13 );("Optics"J=14); &J,0;1;("ELECTRICITY-MAGNETISM"J=15);0;("e.m.f.-Currents"J=16);("Magnetism"J=17);("Electromagnetics"J=18);("Domestic Electricity"J=19);("Electrostatic Charges"J=20);("The Atom"J=21); &DI=-1:J>0J7J11 J15I=S(J)/N(J) &J,22;2;("VERY BAD"I=0);("POOR"I>0I.3);("AVERAGE"I>.3I.6);("GOOD"I>.6I.85Y);1;5;("EXCELLENT"I>.85Y); 'J '0::S<45-6,0;"YOU HAVE NOT REACHED GRADE 'A' STANDARD."::"YOU ARE ADVISED TO REPEAT THIS TEST UNTIL YOU DO ATTAIN THAT GRADE.";16,0;"PRESS 'ENTER' TO TRY AGAIN.":5000:502 'q"YOU HAVE REACHED A GOOD STANDARDIN THIS TEST. START THE TAPE AND THEN PRESS 'ENTER' TO LOAD THE NEXT ONE." ' "" '"PHYSICS 3"1 @dqxn%%H&%%vj &%lzJN 2514325143M123321AA. B. C. D. E. B 1. 2. 3. qqCD EB C AIQAWPHYSICS 1 yy{G{ A0:0:0:0:5:5:0: 5,8;" P H Y S I C S "''15;"4";11 ,1;"THIS PROGRAM TAKES ABOUT THREE "''" MINUTES TO LOAD COMPLETELY" Y2:255,0:0,175:-255,0:0,-175 2*5:5:0,0:"" <"PHYSICS 1"1 3 PANEL 1 >>fP@ 0:5:5::3,12 ;"PAPER I";''9 ;"REVISION TEST";10 ,1;"YOU ARE NOT PERMITTED THE USE OF AN ELECTRONIC CALCULATOR OR ANY AID TO HELP WITH NUMERICAL CALCULATIONS."''" USE SPARE PAPER FOR ROUGH WORK IF NECESSARY." 5:5:"" <"PANEL 1"1 ^ PANEL 2 66e8 5:5:0: t4,0;" YOU SHOULD RETURN A STANDARD BETTER THAN GRADE 'E' IN YOUR FIRST ATTEMPT AT THIS PROGRAM." \''" SHOULD YOU NOT ACHIEVE A GOOD GRADE THEN STUDY THE TEACHING PROGRAMS IN EARNEST." 2"5:0,0;:"" <"PANEL 2"1 PHYSICS 4 wuz w,236099\,100d:23562 \,1  l0:10 ,2;" S T O P T H E T A P E ";13 ,4;"PRESS ANY KEY TO GO ON." #.5,34":""20  10 q:''" TO ANSWER THE QUESTIONS:"''" 1. PRESS THE LETTER FOR THE ANSWER YOU CHOOSE."''" 2. PRESS 'ENTER'." #G'''"YOU CAN CHANGE YOUR ANSWER BY USING 'DELETE' IN THE USUAL WAY." (E200:20,1;"NOW PRESS 'ENTER' TO START.":0 2:N$="2514325143":M$="123321":A$="A. B. C. D. E. ":B$="1. 2. 3. "::S(22):N(22):Q=1:"QUESTION 1."::ANS=0 "THE RATIO OF THE SINE OF THE ANGLE OF INCIDENCE TO THE SINE OF THE ANGLE OF REFRACTION IS CONSTANT AND IS CALLED THE INDEXOF REFRACTION OF THE SUBSTANCE." o %M=(*5+1) %&:Y=04:A$(3*Y+13*Y+3);:V+5*N$(Y+M)+20:N$(Y+M)=1Q$=A$(3*Y+1) %0Y:S3 %M=(*5+1) %sY=04:V+5*N$(M+Y)+20:A$(3*Y+1):N$(Y+M)=1Q$=A$(3*Y+1) %Y:S3 % M=1+3*(*2) %:TT=0:Y=02:B$(3*Y+1);". ";:K=0:V+5*M$(M+Y)+20:TT=TT+(Y+2)*(K>0) %Y:Q$=C$(TT-1):S3 %2,0;3;"A";9 ;"B";15;"C";21;"D";27;"E":,," 1,2,3";8;"1,2";14;"2,3";21;"1";27;"3":" ALL ONLY ONLY ONLY ONLY":" RIGHT RIGHT RIGHT RIGHT RIGHT" %r4,117u:238,0:4,149:238,0:4,165:238,0 %AO=4244480:O,165:0,-480:O &: &H%W$:RT=1q$=" ":9840p& &R9N(J)=N(J)+1:W$=Q$W$=(Q$+32 )9890& &\20,0;"NO- ";Q$; &f9" YOUR SCORE IS ";ANS;"/";Q:"PRESS 'ENTER'":0 &pW$Q$W$(Q$+32 )RT=0:6:6::V+502:"ENTER 'Y' TO REVIEW THE QUESTIONPRESS 'ENTER' TO GO ON.";I$:I$="Y"I$="y"RT=1:9870& &zQ=5029900& &*V=V+100d:Q=(V-900)/100d &A7:7::"QUESTION ";Q;"."::Q34"9700% &V &WANS=ANS+1:20,0;"CORRECT- ";Q$;".";:S(J)=S(J)+1:9830f& &b20,0;"PRESS 'ENTER' FOR TEST RESULTS.":0::10 ,0;"YOU HAVE:- "; &S=ANS:2;("FAILED-"S23);("UNGRADED"S8);("GRADE "S>8S<23);("E"S>8S16);("D"S>16S23);0;("PASSED-GRADE "S>23);("C"S>23S34");("B"S>34"S41));("A"S>41)) &M17,0;"PRESS 'ENTER' FOR AN ANALYSIS OFYOUR TEST RESULTS":P$: &J=021:J,0;1;("MECHANICS"J=0);0;("Units-Vectors-Density"J=1);("Particulate Matter"J=2);("Motion"J=3);("Static Systems"J=4);("Work-Energy-Power"J=5);("Pressure-Flotation"J=6); &ԍJ,0;1;("HEAT"J=7);0;("Nature-Units-Transfer"J=8);("Expansion"J=9 );("Heating Changes"J=10 ); &ޛJ,0;1;("WAVES-SOUND-LIGHT"J=11 );0;("Vibrations-Waves"J=12 );("Electromagnetic Waves"J=13 );("Optics"J=14); &J,0;1;("ELECTRICITY-MAGNETISM"J=15);0;("e.m.f.-Currents"J=16);("Magnetism"J=17);("Electromagnetics"J=18);("Domestic Electricity"J=19);("Electrostatic Charges"J=20);("The Atom"J=21); &DI=-1:J>0J7J11 J15I=S(J)/N(J) &J,22;2;("VERY BAD"I=0);("POOR"I>0I.3);("AVERAGE"I>.3I.6);("GOOD"I>.6I.85Y);1;5;("EXCELLENT"I>.85Y); 'J '0::S<45-6,0;"AS YOU HAVE NOT REACHED THE GRADE 'A' STANDARD YOU ARE ADVISED TO REPEAT THIS TEST.":16,0;"PRESS 'ENTER' TO TRY AGAIN.":5000:502 '7,3;1;1;1;" AN EXCELLENT RESULT! "'''0;0;0;"YOU HAVE REACHED A GOOD STANDARDWITH THIS TEST AND IT WILL TEACHYOU LITTLE MORE."''"YOU SHOULD PRESS 'ENTER' TO LOAD AND WORK THE NEXT ONE." ' Z$:"" '"PHYSICS 4"1  dqn%%H&%%v\j% Z@N 2514325143M123321AA. B. C. D. E. B 1. 2. 3. qqCD EB C ARFfff$0% kQAWI PHYSICS 1 yy{{ A0:0:0:0:5:5:0: 5,8;" P H Y S I C S "''15;"5";11 ,1;"THIS PROGRAM TAKES ABOUT THREE "''" MINUTES TO LOAD COMPLETELY" Y2:255,0:0,175:-255,0:0,-175 2*5:5:0,0:"" <"PHYSICS 1"1 2 PANEL 1 >>f@ 0:5:5::3,12 ;"PAPER I";''9 ;"REVISION TEST";10 ,1;"YOU ARE NOT PERMITTED THE USE OF AN ELECTRONIC CALCULATOR OR ANY AID TO HELP WITH NUMERICAL CALCULATIONS."''" USE SPARE PAPER FOR ROUGH WORK IF NECESSARY." 5:5:"" <"PANEL 1"1 ^PANEL 2 [[ec] 5:5:0: 2,0;" YOU ARE NOW SUFFICIENTLY WELL DRILLED IN THIS TYPE OF PAPER TO EXPECT AT LEAST A GRADE C AT YOUR FIRST ATTEMPT AT THIS PROGRAM." ''" HOWEVER, SHOULD YOU REACH EVEN A GRADE A AT YOUR FIRST TRY- WHICH IS NOT EASY TO DO- YOU ARE NOT YET COMPLETELY READY TO SIT THE A.E.B. EXAMINATION." ''" PAY GREAT ATTENTION TO THE ANALYSIS GIVEN AT THE END AND EVEN IF ALL TOPICS APPEAR AS EXCELLENT YOU SHOULD STILL COMPLETE THE PROGRAMS THAT REMAIN." 2"5:0,0;:"" <"PANEL 2"1  PHYSICS 5 D~E)€P255,0:0,175:-255,0:0,-175: :3:BX=8000@ l0:10 ,3;" S T O P T H E T A P E ";13 ,4;"PRESS ANY KEY TO GO ON." #.5,34":""20  10 q:''" TO ANSWER THE QUESTIONS:"''" 1. PRESS THE LETTER FOR THE ANSWER YOU CHOOSE."''" 2. PRESS 'ENTER'." #A'''" YOU CAN CHANGE YOUR ANSWER BY USING 'DELETE' AS USUAL. " (C20,1;"NOW PRESS 'ENTER' TO START.":3:0 2:N$="2514325143":M$="123321":A$="A. B. C. D. E. ":B$="1. 2. 3. "::S(22):N(22):Q=1:"QUESTION 1."::ANS=0 <S1=9500%:S2=9600%:S3=9800H&:S4=9650%:S5=9700%:RT=0:C$="D EB C A":V=1000:200:V ?:M=116:D$:N=07:D:D$+N,D:N:M K"",32 ,80P,16,32 ,112p,0,0,0 J"",96`,16,32 ,16,96`,0,0,0 M"",16,16,16,124|,480,8,16,568 I"",480,72H,72H,480,0,0,0,0 Q"",0,96`,102f,102f,231,102f,102f,96` I"",0,0,32 ,80P,136,5,2,0 L"",0,2,124|,168,40(,40(,40(,0 M"",0,34",502,58:,255,58:,502,34" "P"",16,254,254,0,254,254,16,16 ,I"",0,480,8,8,20,34",65A,0 6L"",0,60<,66B,66B,66B,36$,231,0 @Q"",85U,170,85U,170,85U,170,85U,170 JQ"",170,85U,170,85U,170,85U,170,85U TI"",0,2,36$,88X,88X,38&,0,0 ^L"",0,24,36$,40(,36$,40(,32 ,32 hK"",0,68D,40(,16,40(,40(,16,0  J=1:MS=(*5+5):LN=100d*(*8+2):"A CUBE HAS A MASS OF ";MS;" kg AND ASIDE ";LN;" cm LONG."'"THE DENSITY OF THE CUBE IS:"::S1 A.001wn*(1000*MS/(LN/100d)^3);" kg/m": MS/LN;" kg/m":  40.001wn*(1000*ms/3/ln);" kg/m": ms*ln^3;" kg/m": 35#;" kg/cm": 2"THE DENSITY IS THE MASS DIVIDED BY ITS VOLUME." $U'"THE VOLUME OF THE CUBE IS:"''" (";LN;"/100) = ";(LN/100d)^3;" m." .'"THE DENSITY IS:"''" D = ";MS;"/";(LN/100d)^3;" = 0";.001wn*(100d*MS/((LN/100d)^3));" kg/m" K L?J=2:"A DIFFERENCE BETWEEN A GAS AND A LIQUID IS:":S1 e="THERE IS LESS SPACE BETWEEN THE LIQUID'S MOLECULES.": j"THE GAS IS HOTTER.": o "THE LIQUID IS MORE MOBILE.": t "GAS MOLECULES MOVE FASTER.": y/"THE GAS HAS A LARGER THERMAL CAPACITY.": ~]"THE SPACE BETWEEN THE MOLECULES IN A GAS IS ABOUT 1000 TIMES GREATER THAN IN A LIQUID."  6J=3:"THE RATE OF CHANGE OF MOMENTUM IS:":S1 "A VECTOR QUANTITY.": "AN ENERGY.": "A MEASURE OF WORK DONE.": "A RESULTANT VELOCITY.": "A MEASURE OF PRESSURE.": T"THE RATE OF CHANGE OF MOMENTUM IS A FORCE AND THEREFORE IT IS AVECTOR QUANTITY."  ~J=4:wt = (*70F+30):"WHICH FORCE WILL JUST HOLD THE LOAD AT 'F' IF THE WEIGHT OF THELEVER IS ";WT;" N?" 10 ,17;"<";29;">F";11 ,17;"< >";30;"^";12 ,17;"";14,20;"";17,18;"170 N"  4159,568:0,7:n=05:136-n,71G-n:2*n,0:n:160,46.:3,-3:0,32 :0,-32 :3,3:243,76L:0,8:141,83S:24,0:141,91[:95_,0: ,510 ,22;"7m";11 ,18;"2m":s1 --((340T+3.5`*WT)/7);" N.": 2 "48.6 N": 7-((340T-3.5`*WT)/7);" N.": < "49 N.": A(340T/7);" N.": F"THE WEIGHT OF THE LEVER ACTS HALF-WAY ALONG ITS LENGTH. THE MOMENTS ABOUT THE PIVOT ARE:"''"ANTICLOCKWISE F * 7"'"CLOCKWISE 140*2 + ";WT;"*3.5" P@'"WHEN THESE JUST BALANCE:"''" 7*F = ";340T+3.5`*WT ZF'"THIS GIVES:"''" F = ";((340T+3.5`*WT)/7);" N." w xzJ=5:"HOW MANY METRES FROM THE POINT 'P' IS THE CENTRE OF MASS OF THEUNIFORM LAMINA SHOWN BELOW?":1408:s1 fN=08:12 +N,8;6;" ";(" "(N1N7)):N $11 ,22;"< >";16,7;"P";21,8;"<";27;">":64@,8:160,0:0,16:-480,0:0,39':480,0:0,16:-160,0:0,-71G:179,83S:40(,0 I241,11 :2,-2:2,2:-2,-2:0,70F:-2,-2:2,2:2,-2:228,27:2,-2:2,2:-2,-2:0,37%:-2,-2:2,2:2,-2:67C,3:152,0 a11 ,24;"6m";16,28;"5m9m";21,17;"20m":5,0;:  "8.6 m":  "8.4 m":  "8.8 m":  "7.0 m":  "8.5 m": "AS THE LAMINA IS UNIFORM ITS WEIGHT IS DISTRIBUTED EVENLY OVER ITS AREA. THE CENTRE OF ITSMASS WILL BE AT A POINT SUCH THAT THE SUM OF THE MOMENTS OF WEIGHT ABOUT THAT CENTRE WILL BEZERO." "PRESS 'ENTER'";Z$:7:7::1408:N=0100d2:64@+1.6L*N,9 +0.73333*N:64@+1.6L*N,79O-0.73333*N:N 93],43+:16,19;8;"A";16,26;"B";16,10 ;"C":N=039'2:176+1.2*N,24+N:176+1.2*N,63?-N:N: 0,0;"SUPPOSE THE CENTRE OF MASS IS ATTHE POINT 'C'. THE MOMENT OF THEWHOLE LAMINA ABOUT 'C' LESS THE MOMENT OF THE MISSING PORTION WOULD BE EQUAL TO ZERO:"''" 9*20 * AC - 6*5 * BC = 0" 8'" 180*(10-PC)-30*(20-PC-3)= 0"''"i.e. PC = 8.6 m."  ܓJ=6:"A BODY OF DENSITY 750 kg/m IS PLACED ON A LIQUID OF DENSITY 1000 kg/m. WHAT FRACTION OF ITSVOLUME REMAINS ABOVE THE LIQUID?":S1  "0.25":  "0.75":  "0.33":  "0.66":  "0.92": "A VOLUME OF 1 m OF THE BODY HAS A MASS OF 750 kg. THIS MASS WILL DISPLACE AN EQUAL MASS OF THE LIQUID WHICH HAS A VOLUME OF0.75 m." h'"1 m OF THE BODY WILL THEREFORE HAVE 0.75 m UNDER THE SURFACE OF THE LIQUID AND 0.25 m ABOVE IT." ? @cJ=8:"TEMPERATURES IN THE RANGE OF 100TO 1000C ARE MOST CONVENIENTLY MEASURED WITH A:":S1 Y"THERMOCOUPLE.": ^"PYROMETER.": c#"MERCURY IN GLASS THERMOMETER.": h"GAS THERMOMETER.": m"THERMISTOR.": r"A THERMOCOUPLE CONSISTS OF TWO WIRES MADE OF DIFFERENT METALS AND JOINED AT ONE END. WHEN THEJOINED END IS AT A DIFFERENT TEMPERATURE TO THE OTHER ENDS ANe.m.f. DEVELOPS AND CAUSES AN ELECTRIC CURRENT TO FLOW." |o'"THIS CURRENT CAN BE USED TO GAUGE THE TEMPERATURE DIFFERENCEBETWEEN THE HOT JUNCTION AND THECOLD ENDS."  J=9 :VL=(*80P+20):TM=(*800 +200):VL;" cm OF AIR WERE HEATED FROM"'"20C TO ";TM;"C."'"WHAT IS THE VOLUME OF THE HEATEDAIR?":S1 )(VL/293%*(TM+273));" cm": (VL/20*TM);" cm": )(VL*293%/(273+TM));" cm": VL*273;" cm": VL*2.7,;" cm": O"THE HOT VOLUME DEPENDS ON THE CHANGE IN ABSOLUTE TEMPERATURES AS FOLLOWS:" Z'" ";VL;"*(";TM;"+273)/(20+273)"'" = ";(VL*(TM+273)/293%);" cm"  EJ=10 :"THE BOILING POINT OF PURE WATER IS 100C ONLY IF:":S1 !/"ATMOSPHERIC PRESSURE IS 101.3 kPa": &""ATMOSPHERIC PRESSURE IS 1 Pa": +-"THE RATE OF HEATING IS FAST ENOUGH.": 01"THE THERMOMETER IS CORRECTLY CALIBRATED.": 5@"ANTI-BUMPING GRANULES ARE USED IN THE BOILING FLASK.": :J"ATMOSPHERIC PRESSURE MUST BE 101.3 kPa FOR WATER TO BOIL AT 100C." k lJ=12 :ds=(*30+10 ):"HOW LONG DOES IT TAKE FOR THE SHOCK WAVE CAUSED BY THE RUPTUREOF A STEEL CABLE UNDER TENSION TO REACH THE MOORING POINT ";ds;" kmAWAY IF THE VELOCITY OF SOUND INSTEEL IS 5000 m/s?":S1 DS/5;" s": (ds+1)/5;" s": (ds-1)/5;" s": (5000/ds);" s": ".01z# =*(500/ds);" s": o"THE TIME IT TAKES IS SIMPLY THE DISTANCE, ";DS;" km, DIVIDED BY THE"'"VELOCITY OF SOUND IN STEEL,"'"5 km/s:" $'" ";DS;"/5 = ";DS/5;" s"  ЃJ=14:"WHEN A RAY OF LIGHT ENTERS A TRANSPARENT MEDIUM AND THEN IS DEVIATED AS SHOWN IN THE DIAGRAMTHE RAY IS SAID TO:" 167,110n:3,0:0,3:N=04:12 +N,20;5;" ":N:160,80P:80P,0:160,120x:40(,-40(:20,-40( 6,0;:S1 "BE REFRACTED.": "BE DIFFRACTED.":  "BEND.": "TRAVEL FASTER.": "BE DISPERSED.": /"THIS KIND OF DEVIATION IS CALLEDREFRACTION." 3 4J=16:CR=(*80P+20):MN=(*14+10 ):SC=(*502+10 ):"WHEN A CURRENT OF ";CR;" A FLOWS FOR";MN;" min AND ";SC;" s, THE CHARGE"'"TRANSFERRED IS:":S1 MCR*(SC+60<*MN);" C": RCR*MN;" C": WCR*SC;" C": \CR*MN;" F": a "162 C": fb"THE CHARGE, IN COULOMBS (C) IS THE CURRENT MULTIPLIED BY THE TIME EXPRESSED IN SECONDS (s):" p>'" ";CR;"*(60*";MN;"+";SC;") = ";CR*(MN*60<+SC);" C"  7J=14:"WHICH POINT IS DARKEST ON THE SCREEN?" v9 ,0;"LIGHT";17;"BALL";13 ,0;"SOURCE";15;"BEARING";17,26;"SCREEN" 22,72H:218,12 :22,96`:218,-12 :20,84T,11 :N=03:152,84T,(4-N):N:239,42*:0,90Z S2 11 ,30;: 8,30;: 6,30;: 12 ,30;: 14,30;: K"THE DARKEST POINT IS IN THE UMBRA WHICH JUST REACHES THE SCREEN."  GJ=17:"THE FIELD SHOWN BETWEEN THE TWO MAGNETS INDICATES THAT:" A15,6;6;" ";15,17;" " 182,47/:-47/,0:0,9 :546,0:502,47/:46.,0:0,9 :-524,0 #N=14:M=02:97a+37%*(N=2N=4),524+M*(2-4*(N=3N=4)):(16-16*M)*(1-2*(N=2N=4)),26-524*(N=3N=4),/1.8ffff*(1-2*(N=2N=3)):M:N 5,0;:S1 "THEY REPEL.": "THEY ATTRACT.":  "THEY HAVE DIFFERENT POLES.": $"THEY ARE ELECTROMAGNETS.": )!"THEY ARE MADE OF SOFT IRON.": ._"THE LINES OF MAGNETIC FIELD GO AWAY FROM EACH POLE SHOWING THATTHE POLES REPEL EACH OTHER." _ `J=18:"WHEN THE MAGNET SHOWN IN THE DIAGRAM IS ROTATED IN THE WAY SHOWN BY THE ARROW, THE INDUCED CURRENT IN THE COIL WILL:" jP188,22:22,0,/1.8ffff:-3,0:3,0:0,-3:210,480:-22,0,/1.8ffff:3,0:-3,0:0,3:17,22;5;"N S":174,40(:0,-9 :513,0:0,9 :-513,0 l130,16:0,20:2,8:N=03:4,0,-:0,-20,-/6:2,20,-/4:N:4,0,-:1,-8:0,-20 n7,0;:S1 y"ALTERNATE.": ~!"FLOW IN ONE DIRECTION ONLY.": "NEUTRALIZE ITSELF.": "AID THE ROTATION.": -"PUSH THE COIL AWAY FROM THE MAGNET.": N"THE CHANGING MAGNETIC FIELD WILLINDUCE AN ALTERNATING CURRENT INTHE COIL. "  QJ=19:"WHEN WIRING A THREE PIN 13 A PLUG THE BROWN COLOURED WIRE:":S1 "IS THE LIVE WIRE.": "IS NEVER CONNECTED.": "SHOULD NOT BE TOUCHED.": "IS NOT FUSED.": "SHOULD BE INSULATED.": "THE BROWN WIRE IS 'LIVE', WHEN IT IS CONNECTED IT CARRIES THE FULL MAINS VOLTAGE. IT SHOULD BEWIRED TO THE FUSE CLIP IN THE 13 A PLUG." ' ({J=20:"WHICH OF THE FOLLOWING ACQUIRES A POSITIVE ELECTROSTATIC CHARGE WHEN RUBBED WITH A DRY WOOLLEN DUSTER?":S1 A"A CELLULOSE ACETATE ROD.": F"A POLYTHENE ROD.": K"A STEEL ROD.": P"A SULPHUR ROD.": U"AN ALUMINIUM ROD.": Z"THE WOOLLEN DUSTER ATTRACTS SOMEELECTRONS FROM THE CELLULOSE ACETATE LEAVING IT POSITIVELY CHARGED AND AT THE SAME TIME THEWOOLLEN DUSTER ACQUIRES AN EQUALNEGATIVE CHARGE."  RJ=21:"WHICH ONE OF THE FOLLOWING IS TRUE OF RADIOACTIVE EMISSIONS?":S1 C"-RAYS REDUCE THE ATOMIC NUMBER OF THE ELEMENT BY TWO.": 2"-RAYS LEAVE THE NUCLEUS WITH NO CHARGE. ": 0"-RADIATION HAS A VERY SHORT HALF-LIFE.": @"NEUTRON RAYS INCREASE THE NUMBER OF NUCLEAR PROTONS.": 7"X-RAYS INCREASE THE NUMBER OF NUCLEAR NEUTRONS.": ~"-RAYS CONSIST OF PARTICLES WITHA MASS OF FOUR ATOMIC UNITS AND TWO POSITIVE CHARGES, i.e. TWO PROTONS WITH TWO NEUTRONS." '"THEIR DEPARTURE FROM THE NUCLEUSCAUSES A MASS LOSS OF FOUR UNITSAND AN ATOMIC NUMBER (NUMBER OF PROTONS) REDUCTION OF TWO."  J=12 :FR=(*900+100d):"A RESONANT PIPE HAS A BASE FREQUENCY OF ";FR;" Hz IN AIR IN WHICH THE SPEED OF SOUND IS 330 m/s. WHAT WILL BE THE BASE FREQUENCY WHEN FILLED WITH A GASIN WHICH THE SPEED OF SOUND IS 860 m/s?":S1 (FR*2.606&ȴ9);" Hz": (FR/2.606&ȴ9);" Hz": (FR*.652&x);" Hz": (FR*1.303&ȴ9);" Hz": (FR*10.42&Q);" Hz": "~"AS THE WAVELENGTH OF THE SOUND IS FIXED BY THE LENGTH OF THE PIPE, THE FREQUENCY MUST RISE TOMAINTAIN THE HIGHER SPEED." ,Q'"THE NEW BASE FREQUENCY IS:"''" ";FR;"*860/330 = ";(FR*2.606&ȴ9);" Hz." S TSJ=8:"AN INCREASE IN THE MOLECULAR MOVEMENT OF A SUBSTANCE IMPLIES:":S1 m "A RISE IN ITS TEMPERATURE.": r"IT WILL GLOW RED HOT.": w#"IS REDUCING ITS HEAT CONTENT.": |"A RISE IN PRESSURE.": "A CHANGE OF STATE.": N"THE TEMPERATURE GOVERNS THE MEANVELOCITY OF THE PARTICLES OF ANYSUBSTANCE."  /J=10 :"DURING SUBLIMATION A SOLID:":S1 "ABSORBS HEAT.": "MELTS AND THEN EVAPORATES.": "FORMS AN ALLOTROPE.": #"CHANGES ITS CRYSTALLINE FORM.": "VANISHES TO NOTHING.": x"SUBLIMATION IS THE PROCESS IN WHICH A SOLID CHANGES TO A GAS. TO DO THIS IT MUST ABSORB LATENTHEAT OF SUBLIMATION."  DJ=5:"THE EFFECT OF FRICTION IN A SET OF PULLEYS IS TO:":S1 5"REDUCE THE EFFICIENCY.": : "REDUCE THE VELOCITY RATIO.": ?"MAKE THE LOAD LESS.": D"LOWER THE SAFETY LIMIT.": I."MAKE THE MECHANICAL ADVANTAGE GREATER.": N4"FRICTION REDUCES THE EFFICIENCY OF ALL MACHINES."  2J=16:EM=.1}L*(*10 +10 ):RS=.1}L*(*9 +1):CR=.1}L*(*7+3):AN=EM-RS*CR:"WHAT POTENTIAL DIFFERENCE IS DELIVERED BY A CELL HAVING AN e.m.f. OF ";EM;" V AND INTERNAL"'"RESISTANCE OF ";RS;" WHEN A"'"CURRENT OF ";CR;" A FLOWS THROUGH"'"IT?":S1 AN;" V": #0.01z# =*(100d/AN);" V": AN/10 ;" V": AN*10 ;" mV": AN+.1}L;" V": k"THE VOLTAGE OUTPUT IS THE e.m.f.LESS THE CURRENT, ";CR;" A, TIMES"'"THE INTERNAL RESISTANCE OF"'RS;" :" )'" ";EM;"-";CR;"*";RS;" = ";AN;" V."  J=6:VL=(*700+300,):SM=(*502+502):AN=(100d*VL/SM):"WHAT PRESSURE IS NEEDED TO MAKE ";VL;" cm AT 101 kPa COMPRESS"'"TO ";SM;" cm?":S1 AN;" kPa": an+4;" kPa": an-4;" Pa": sm;" kPa": vl/sm;" kPa": ]"THE PRESSURE REQUIRED IS FOUND USING BOYLE'S LAW:"''" 101*";VL;"/";SM;" = ";AN;" kPa." G HJ=3:"WHICH EQUATION IS MOST SUITABLE FOR CALCULATING THE POWER NEEDEDTO INCREASE THE VELOCITY OF A MASS, m, TO A FINAL VELOCITY, v,FROM AN INITIAL VELOCITY, u, IN A TIME OF t SECONDS?":S1 a"(v-u)*m/t"'': f"(v-u)*t/m"'': k"mv-mu"'': p"m*(v-u)"'': u"m*(v-u)/t"'': z7"THE CHANGE IN KINETIC ENERGY IS:"''" m*(v-u)" j'"THE POWER REQUIRED IS THE ENERGYCHANGE DIVIDED BY THE TIME IT TAKES TO HAPPEN:"''" m*(v-u)/t."  J=14:OL=(*502+20):FL=(*10 +6):AN=.01z# =*(200*FL/(OL-FL)):"WHAT SIZE OF IMAGE IS FORMED OF A 2 cm HIGH OBJECT PLACED ";OL;" cm"'"FROM A LENSE OF ";FL;" cm FOCAL"'"LENGTH?":S1 AN;" cm": an+0.2~L;" cm": an-.1}L;" cm": #.01z# =*(100d/an);" mm": &.01z# =*(100d*fl/ol);" cm": T"THE MAGNIFICATION IS THE RATIO OF THE IMAGE DISTANCE TO THE OBJECT DISTANCE." '"THE IMAGE DISTANCE IS FOUND FROMTHE EQUATION:"''" 1/f = 1/u + 1/v,"''"WHERE f IS THE FOCAL LENGTH, v IS THE IMAGE DISTANCE AND u IS THE OBJECT DISTANCE." i'"PUTTING IN THE VALUES GIVES THE IMAGE DISTANCE AS ";:IL=.1}L*(10 *OL*FL/(OL-FL)):IL;" cm" F'"THIS GIVES THE IMAGE SIZE AS:"''" 2*";IL;"/";OL;" = ";AN;" cm."  >J=8:"THE MELTING POINT OF ICE CAN BE CHANGED BY:":S1 )"CHANGES IN PRESSURE.": ."HEATING.": 3"SUPERCOOLING.": 8"THERMOSTATIC METHODS.": ="ADDING SAND TO IT.": BA"THE MELTING POINT OF ICE FALLS AS THE PRESSURE IS INCREASED." s tJ=16:CR=(*20+10 ):TM=(*00+100d):JL=.01z# =*(*500+100d):"A CELL DELIVERS ";CR;" A FOR ";TM;" s"'"PRODUCING ";JL;" kJ IN THAT TIME." ~WAN=.01z# =*(100000CP*JL/TM/CR):"THE VOLTAGE DELIVERED BY THE CELL IS:":S1  AN;" V": AN+0.02{# =;" V": AN/4;" V": AN*3;" V":  "1.36 V": ""A VOLT IS A JOULE PER COULOMB." x'"THE NUMBER OF JOULES IS ";JL;" kJ"'"AND THE COULOMBS IS THE TIME,"'"";TM;" s, MULTIPLIED BY THE CURRENTOF ";CR;" A:" 6'" ";1000*JL;"/(";TM;"*";CR;") = ";AN;" V."  cJ=12 :"WHEN THE TENSION OF A VIBRATING STRING IS INCREASED NINEFOLD, THE PITCH WILL:":S1 8"INCREASE THREE TIMES THE INITIAL FREQUENCY.": "REMAIN UNCHANGED.": 0"RISE NINE TIMES THE INITIAL FREQUENCY.": ,"INCREASES ITS AMPLITUDE NINE TIMES.": 0"RISE 81 TIMES THE INITIAL FREQUENCY.":  L"THE PITCH OF A TENSIONED STRING VARIES AS THE SQUARE ROOT OF THETENSION." ; 11 );5+M,3+N;"";6;3+3*(N>11 );5+M,26-N;"":M:N W''"YOU CAN CHECK THE COLOURS BY EXAMINING THE SCREEN WITH A MAGNIFYING GLASS."  AJ=14:"THE HIGH BRILLIANCE OF DIAMONDS IS CAUSED BY:":S1 7"TOTAL INTERNAL REFLECTION WITHIN THE STONE.": 9"RED BEING REFRACTED BETTER THAN OTHER COLOURS.": ="THE DISPERSIVE POWER OF DIAMOND BEING SO GREAT.":  "THE HARDNESS OF THE STONE.": !"THE QUALITY OF THE DIAMOND.": {"THE VERY HIGH REFRACTIVE INDEX CAUSES A HIGH DEGREE OF INTERNALREFLECTION IN THE DIAMOND GIVINGIT A UNIQUE BRILLIANCE."  YJ=14:"A PERSON SWIMMING UNDER WATER LOOKS TOWARDS THE SURFACE AND SEES:":S1 >"A CIRCLE OF LIGHT SURROUNDED BY A SILVERY REFLECTION.": ""ONLY A DARK SURFACE.": '"HIS OWN REFLECTION.": ,>"THE OVERHEAD SCENE DISTORTED BY THE SURFACE WAVELETS.": 1#"EVERYTHING ABOVE MUCH CLOSER.": 6"THE CIRCLE OF LIGHT CONTAINS THEOVERHEAD SCENE AND THE SILVERY SURFACE SURROUNDING IT IS CAUSEDBY TOTAL INTERNAL REFLECTION OF LIGHT AT THE WATER'S SURFACE." g hAJ=19:"WHEN A 1 kW ELECTRIC FIRE IS RUNFOR ONE HOUR:":S1 /"A UNIT OF ELECTRICITY IS CONSUMED.": #"3 A OF ELECTRIC CURRENT FLOW.": /"THE MAINS VOLTAGE DIMINISHES SLIGHTLY.": ""4180 kJ OF HEAT IS PRODUCED.": 7"THE FUSES ARE SEVERELY LOADED WITH THE CURRENT.": L"A UNIT OF ELECTRICITY USED FOR DOMESTIC PURPOSED IS 1 kW RUN FOR 1 h."  CJ=1:"WHICH OF THE FOLLOWING IS A VECTOR QUANTITY?":S4 K=1:"MOMENTUM.": "K=1:"A MAGNETIC FIELD.": "TEMPERATURE.": V"MOMENTUM HAS MAGNITUDE AND A DIRECTION IMPARTED TO IT BY THE VELOCITY INVOLVED." '"A MAGNETIC FIELD IS A FORCE FIELD AND EACH POINT IN THE FIELD HAS A FORCE, WITH ITS OWN DIRECTION OF ACTION, ASSOCIATED WITH IT." / 0HJ=3:"A BODY WITH A MASS OF 100 kg UNDER FREE FALL WILL:":S4 IK=1:"WEIGH NOTHING.": N<K=1:"WEIGH LESS THAN WHEN IT IS STATIONARY.": S-"HAVE A STEADILY DIMINISHING WEIGHT.": b"THE WEIGHT OF A BODY IS MEASUREDBY THE REACTION TO IT FROM SOME WEIGHING DEVICE PLACED UNDER IT."''"UNDER FREE FALL THERE WOULD BE NO SUCH REACTION TO MEASURE." lu'"EVIDENTLY IF THE 'WEIGHT' IS NON-EXISTENT DURING FREE FALL ITMUST BE LESS THAN THE WEIGHT WHEN STATIONARY."  J=4:"WHEN A CRANE IS USED TO LIFT A LOAD THE ENERGY USED TO WORK THECRANE IS ALWAYS MORE THAN THE WORK DONE IN LIFTING THE LOAD."''"THIS IS BECAUSE:":S4 +K=1:"OF THE EFFECT OF FRICTION.": ."ENERGY IS NOT EXACTLY EQUAL TO WORK.": ~K=1:"IN PRACTICE ENERGY CANNOT BE CONVERTED COMPLETELY INTO USEFUL WORK, SOME IS ALWAYS LOST AS HEAT.": Ɩ"ENERGY CAN ONLY BE COMPLETELY CONVERTED INTO HEAT. IN ALL OTHER CASES OF ENERGY CHANGES SOME HEAT IS ALWAYS PRODUCED DURING THE CHANGE." B'"FRICTION IS USUALLY THE HEAT PRODUCING FACTOR IN MACHINES."  ZJ=6:"WHICH OF THE FOLLOWING IS A CHARACTERISTIC PROPERTY OF FLUIDS.":S4 GK=1:"THEY TAKE THE SHAPE OF THE CONTAINER THEY ARE IN.": +"THEY ARE TRANSPARENT WHEN PURE.": ."THEY HAVE A CLEARLY DEFINED SURFACE.": *"FLUIDS IS A TERM THAT INCLUDES GASES. THE ONLY CHARACTERISTIC PROPERTY SHARED BY LIQUIDS AND GASES IS THAT OF TAKING UP THE SHAPE OF THE CONTAINER THEY ARE PUT INTO." [ \OJ=8:"THE DIFFERENCE BETWEEN A 1C AND1 K TEMPERATURE INTERVAL IS:":S4 u "273": z2"1 K IS MORE THAN 1C BY 5/9th OF A DEGREE.": K=1:"ZERO.": A"THE TEMPERATURE INTERVAL IS THE SAME IN KELVINS (K) AS IN C."  aJ=10 :"A SOLID 'X' HAS A MUCH HIGHER MELTING POINT THAN 'Y'. THIS IMPLIES THAT:":S4 AK=1:"'X' HAS A GREATER LATENT HEAT OF VAPORISATION.": 1"'X' IS A METAL AND 'Y' IS NOT A METAL. ": ""'X' HAS THE GREATER DENSITY.": s"LATENT HEATS OF VAPORISATION OF LIQUIDS ARE ROUGHLY PROPORIONAL TO THEIR ABSOLUTE BOILING POINTSIN KELVINS (K)." # $J=9 :"WHICH OF THE FOLLOWING ACTIONS WOULD INCREASE THE DENSITY OF 300 dm OF OXYGEN AT A PRESUURE OF 100 kPa AND A TEMPERATURE OF 20C? ":S4 =IK=1:"HEATING TO 100C AND RAISING THE PRESSURE TO 200 kPA.": B>"HEATING TO 70C AND RAISING THE PRESSURE TO 115 kPa.": GYK=1:"RAISING THE TEMPERTURE TO 200C AND THE PRESSURE TO 170 kPa.": VQ"HEATING TO 100C INCREASES THE VOLUME TO:"''" 300*(273+100)/273 = 382 dm" `'"RAISING THE PRESSURE TO 200 kPa COMPRESSES THE VOLUME TO:"''" 382*100/200 = 190 dm."''"THIS IS LESS THAN THE ORIGINAL 300 dm THUS INCREASING THE GAS DENSITY." j'"SIMILARLY IT CAN BE SHOWN THAT RAISING THE TEMPERATURE TO 70C AND THE PRESSURE TO 115 kPa WILLMAKE THE VOLUME 336 dm WHEREAS RAISING THE TEMPERATURE TO 200CAND THE PRESSURE TO 170 kPa WILLMAKE THE VOLUME 285 dm.";  ?J=12 :"A WAVE MOVING IN A UNIFORM MEDIUM HAS:":S4 "K=1:"A FIXED VELOCITY.": 'K=1:"A CONSTANT WAVELENGTH.": )K=1:"AN UNCHANGING FREQUENCY.": y"SO LONG AS THE MEDIUM IS UNIFORMTHE WAVE VELOCITY WILL REMAIN CONSTANT AND SO WILL THE WAVE- LENGTH AND FREQUENCY."  `J=13 :"WHICH OF THE FOLLOWING IS TRUE FOR GAMMA-, X-, ULTRA VIOLET ANDCOSMIC RAYS?":S4 CK=1:"THEY ALL TRAVEL AT THE SPEED OF LIGHT IN SPACE.":  3"THEY ARE IN DECREASING ORDER OF FREQUENCY.": "THEY ARE ALL RADIOACTIVE.": |"ALL THESE RAYS ARE EXAMPLES OF ELECTROMAGNETIC RADIATIONS AND THEREFORE WILL TRAVEL AT THE SPEED OF LIGHT IN SPACE." O PRJ=14:"AT THE CRITICAL ANGLE THE SINE OF THE ANGLE OF REFRACTION IS:":S4 iK=1:"EXACTLY 1.": n "0.5.": s9"EQUAL TO THE SINE OF THE ANGLE OF INCIDENCE.": Y"AT THE CRITICAL ANGLE THE ANGLE OF REFRACTION IS 90 AND THE SINEOF 90 IS EXACTLY 1."  J=16:"IN THE DIAGRAM:" ^166,99c:0,-32 :64@,0:0,32 :-64@,0 8,21;"<";27;">":171,107k:480,0:8,23;"12V";9 ,23;"";12 ,23;"6 ";13 ,22;" ":176,67C:BX:4,0 14,0;:S4 *K=1:"THE CURRENT IS 120 C/min.": 'K=1:"THE VOLTAGE IS 12 J/C.": +"THE POWER IN THE RESISTOR IS 72 W.": ""120 C/min IS A CURRENT OF 2 A." '"1 J/C IS 1 VOLT."  OJ=17:"WHEN TWO SIMILAR MAGNETIC POLES ARE BROUGHT CLOSE TOGETHER:":S4 1XK=1:"THE FORCE REPELLING THEM IS ALL THE GREATER AS THEY GET CLOSER.": 6K=1:"WORK IS DONE.": ;`K=1:"THERE IS A POINT BETWEEN THE TWO POLES WHERE THE MAGNETIC FIELD IS ZERO.": J]"THE REPULSION FORCE INCREASES ASTHE SEPARATION OF TWO SIMILAR MAGNETIC POLES GETS LESS." T2'"WORK IS DONE AGAINST THE FORCE OF REPULSION." ^{'"TWO OPPOSING MAGNETIC POLES WILLPRODUCE A NEUTRAL POINT BETWEEN THEM. THE MAGNETIC FIELD AT THE NEUTRAL POINT IS ZERO." { |IJ=18:"THE LAMINATIONS IN THE CORE OF ATRANSFORMER SERVE TO:":S4 AK=1:"REDUCE CORE LOSSES DUE TO 'EDDY' CURRENTS.": "DISSIPATE HEAT.": 3"REDUCE THE RESISTANCE IN THE COIL WINDINGS": "THE CORE OF A TRANSFORMER ACTS TO SOME EXTENT AS A COIL OF ONE TURN IN THE MAGNETIC FIELD. A LAMINATED TYPE OF CONSTRUCTION REDUCES THE 'EDDY' CURRENT IN ITVERY SUBSTANTIALLY."  =J=20:"A MOVING ELECTROSTATIC CHARGE PRODUCES:":S4 %K=1:"AN ELECTRIC CURRENT.": "K=1:"A MAGNETIC FIELD.": "A POTENTIAL DIFFERENCE.": X"A MOVING CHARGE IS AN ELECTRIC CURRENT EVEN IF IT IS NOT HELD IN A WIRE CONDUCTOR." @'"ALL ELECTRIC CURRENTS PRODUCE A MAGNETIC FIELD AROUND THEM." C D*J=10 :"MOST SOLID SUBSTANCES:":S4 ],K=1:"HAVE A LOW VAPOUR PRESSURE.": b"GIVE OFF NO VAPOURS.": g"CANNOT EVAPORATE.": v"MOST SOLIDS HAVE A VERY LOW, BUTMEASURABLE, VAPOUR PRESSURE. THEVAPOUR CAN, IN SOME CASES, BE CLEARLY SEEN AS IN THE CASE OF IODINE WHICH GIVES OFF VIOLET FUMES WHEN WARMED."  lJ=21:"BISMUTH HAS AN ATOMIC NUMBER OF 82 AND AN ATOMIC MASS OF 209. THE BISMUTH NUCLEUS HAS:":S4 -K=1:"82 PROTONS AND 127 NEUTRONS.": #"82 ELECTRONS AND 127 PROTONS.": "209 NEUTRONS.": }"THE ATOMIC NUMBER COUNTS THE PROTONS IN THE NUCLEUS. THE TOTAL OF PROTONS AND NEUTRONS MAKES UP THE ATOMIC MASS."    \J=14:"A SPECTRUM CAN BE PRODUCED FROM A NARROW BEAM OF WHITE LIGHT BY USING A:":S4 %K=1:"PRISM.": *%K=1:"DIFFRACTION GRATING.": /"CURVED MIRROR.": >_"A PRISM OR A DIFFRACTION GRATINGWILL PRODUCE A PURE SPECTRUM FROM A BEAM OF WHITE LIGHT." o @~0,4:40(,0:0,-7:-40(,0:0,3:23677}\,23677}\+40(: %M=(*5+1) %&:Y=04:A$(3*Y+13*Y+3);:V+5*N$(Y+M)+20:N$(Y+M)=1Q$=A$(3*Y+1) %0Y:S3 %M=(*5+1) %sY=04:V+5*N$(M+Y)+20:A$(3*Y+1):N$(Y+M)=1Q$=A$(3*Y+1) %Y:S3 % M=1+3*(*2) %:TT=0:Y=02:B$(3*Y+1);". ";:K=0:V+5*M$(M+Y)+20:TT=TT+(Y+2)*(K>0) %Y:Q$=C$(TT-1):S3 %2,0;3;"A";9 ;"B";15;"C";21;"D";27;"E":,," 1,2,3";8;"1,2";14;"2,3";21;"1";27;"3":" ALL ONLY ONLY ONLY ONLY":" RIGHT RIGHT RIGHT RIGHT RIGHT" %r4,117u:238,0:4,149:238,0:4,165:238,0 %AO=4244480:O,165:0,-480:O &: &H%W$:RT=1q$=" ":9840p& &R9N(J)=N(J)+1:W$=Q$W$=(Q$+32 )9890& &\20,0;"NO- ";Q$; &f9" YOUR SCORE IS ";ANS;"/";Q:"PRESS 'ENTER'":0 &pW$Q$W$(Q$+32 )RT=0:6:6::V+502:"ENTER 'Y' TO REVIEW THE QUESTIONPRESS 'ENTER' TO GO ON.";I$:I$="Y"I$="y"RT=1:9870& &zQ=5029900& &*V=V+100d:Q=(V-900)/100d &A7:7::"QUESTION ";Q;"."::Q34"9700% &V &WANS=ANS+1:20,0;"CORRECT- ";Q$;".";:S(J)=S(J)+1:9830f& &b20,0;"PRESS 'ENTER' FOR TEST RESULTS.":0::10 ,0;"YOU HAVE:- "; &S=ANS:2;("FAILED-"S23);("UNGRADED"S8);("GRADE "S>8S<23);("E"S>8S16);("D"S>16S23);0;("PASSED-GRADE "S>23);("C"S>23S34");("B"S>34"S41));("A"S>41)) &M17,0;"PRESS 'ENTER' FOR AN ANALYSIS OFYOUR TEST RESULTS":P$: &J=021:J,0;1;("MECHANICS"J=0);0;("Units-Vectors-Density"J=1);("Particulate Matter"J=2);("Motion"J=3);("Static Systems"J=4);("Work-Energy-Power"J=5);("Pressure-Flotation"J=6); &ԍJ,0;1;("HEAT"J=7);0;("Nature-Units-Transfer"J=8);("Expansion"J=9 );("Heating Changes"J=10 ); &ޛJ,0;1;("WAVES-SOUND-LIGHT"J=11 );0;("Vibrations-Waves"J=12 );("Electromagnetic Waves"J=13 );("Optics"J=14); &J,0;1;("ELECTRICITY-MAGNETISM"J=15);0;("e.m.f.-Currents"J=16);("Magnetism"J=17);("Electromagnetics"J=18);("Domestic Electricity"J=19);("Electrostatic Charges"J=20);("The Atom"J=21); &DI=-1:J>0J7J11 J15I=S(J)/N(J) &J,22;2;("VERY BAD"I=0);("POOR"I>0I.3);("AVERAGE"I>.3I.6);("GOOD"I>.6I.85Y);1;5;("EXCELLENT"I>.85Y); 'J '0::S<45-6,0;"YOU HAVE NOT REACHED GRADE 'A' STANDARD."::"YOU ARE ADVISED TO REPEAT THIS TEST UNTIL YOU DO ATTAIN THAT GRADE.";16,0;"PRESS 'ENTER' TO TRY AGAIN.":5000:502 'q"YOU HAVE REACHED A GOOD STANDARDIN THIS TEST. START THE TAPE AND THEN PRESS 'ENTER' TO LOAD THE NEXT ONE." ' "" '"PHYSICS 5"5 @qHn%%H&%%v d&%Ad# ̲~L̡ =H; ̪^z$0%ksiN 2514325143M123321AA. B. C. D. E. B 1. 2. 3. qqCD EB C ADZQCWIP0PHYSICS 1 yy{A{ A0:0:0:0:5:5:0: 5,8;" P H Y S I C S "''15;"6";11 ,1;"THIS PROGRAM TAKES ABOUT THREE "''" MINUTES TO LOAD COMPLETELY" Y2:255,0:0,175:-255,0:0,-175 2*5:5:0,0:"" <"PHYSICS 1"1 1PANEL 1 >>f0@ 0:5:5::3,12 ;"PAPER I";''9 ;"REVISION TEST";10 ,1;"YOU ARE NOT PERMITTED THE USE OF AN ELECTRONIC CALCULATOR OR ANY AID TO HELP WITH NUMERICAL CALCULATIONS."''" USE SPARE PAPER FOR ROUGH WORK IF NECESSARY." 5:5:"" <"PANEL 1"1 ^PANEL 2 33e%5 5:5:0: 2,0;" THESE LAST THREE PROGRAMS WILL COMPLETE YOUR PAPER 1 REVISION SO YOU SHOULD APPROACH THEM WITH CONFIDENCE AND ATTAIN A PASS STANDARD IN ALL OF THEM." ''" OVERCONFIDENCE MUST BE GUARDED AGAINST AND SOME QUESTIONS ARE INCLUDED THAT LOOK DECEPTIVELY EASY JUST TO REMIND YOU THAT THIS CAN HAPPEN IN THE A.E.B. EXAMINATION." c''" DO NOT EXPECT TO GET ALL YOUR ANSWERS RIGHT. TAKE TIME TO READ THE QUESTIONS PROPERLY." 2"5:0,0;:"" <"PANEL 2"1 PHYSICS 6 }6) 7:7:0: l0:10 ,3;" S T O P T H E T A P E ";13 ,4;"PRESS ANY KEY TO GO ON." #.5,34":""20  10 q:''" TO ANSWER THE QUESTIONS:"''" 1. PRESS THE LETTER FOR THE ANSWER YOU CHOOSE."''" 2. PRESS 'ENTER'." #G'''"YOU CAN CHANGE YOUR ANSWER BY USING 'DELETE' IN THE USUAL WAY." (:20,1;"NOW PRESS 'ENTER' TO START.":0 2:N$="2514325143":M$="123321":A$="A. B. C. D. E. ":B$="1. 2. 3. "::S(22):N(22):Q=1:"QUESTION 1."::ANS=0 <S1=9500%:S2=9600%:S3=9800H&:S4=9650%:S5=9700%:RT=0:C$="D EB C A":V=1000:200:V ?:M=111 :D$:N=07:D:D$+N,D:N:M K"",32 ,80P,16,32 ,112p,0,0,0 J"",96`,16,32 ,16,96`,0,0,0 M"",16,16,16,124|,480,8,16,568 I"",480,72H,72H,480,0,0,0,0 Q"",0,96`,102f,102f,231,102f,102f,96` I"",0,0,32 ,80P,136,5,2,0 L"",0,2,124|,168,40(,40(,40(,0 M"",0,34",502,58:,255,58:,502,34" "P"",16,254,254,0,254,254,16,16 ,I"",0,480,8,8,20,34",65A,0 6L"",0,60<,66B,66B,66B,36$,231,0  EJ=1:"WHICH OF THE FOLLOWING IS A VECTOR QUANTITY?"::S1 "MOMENTUM.":  "MASS.":  "VOLUME.":  "TIME.": "TEMPERATURE.": d"MOMENTUM HAS MAGNITUDE AND ALSO A DIRECTION OF ACTION IMPARTED TO IT BY THE VELOCITY COMPONENT." K LJ=2:"HEAVY BROMINE VAPOUR PLACED AT THE BOTTOM OF A SEALED GAS JAR CONTAINING AIR WILL SLOWLY RISE AND SPREAD THROUGHOUT THE JAR INA FEW HOURS."''"THIS IS BECAUSE:":S1 eY"THE MOLECULES OF BROMINE AND OF AIR ARE IN A STATE OF CONSTANT AGITATION.": j*"AIR IS HEAVIER THAN BROMINE GAS.": oJ"CONVECTION CURRENTS CAN STIR UP THE GASES INSIDE A SEALED JAR.": t-"ALL MATTER PERMEATES ALL MATTER.": y3"GRAVITATIONAL FORCES DO NOT AFFECT GASES.": ~_"THE CONSTANT AGITATION OF THE MOLECULES OF BOTH GASES CAUSES THE GRADUAL MIXING PROCESS."  kJ=3:"HOW FAR WILL A BODY MOVE DURING ITS THIRD SECOND OF FREE FALL?"'"(Take 'g' as 9.8 m/s.)":S1  "24.5 m.":  "44.1 m.":  "19.6 m.":  "31.8 m.":  "9.8 m.": S"THE DISTANCE COVERED DURING THE FIRST TWO SECONDS IS:"''" *9.8*2 = 19.6 m." V'"THE DISTANCE COVERED DURING THE FIRST THREE SECONDS IS:"''" *9.8*3 = 44.1 m." R'"THE DISTANCE COVERED DURING THE THIRD SECOND IS:"''" 44.1 - 19.6 = 24.5 m."  J=4:FR=(*9 +1):LN=.1}L*(*80P+20):"WHAT IS THE TURNING MOMENT FOR THE COUPLE SHOWN IN THE DIAGRAM WHEN F=";FR;" N AND l=";LN;" m?" x9 ,28;"F";10 ,16;"<";28;"^";12 ,22;"<";28;">";13 ,16;"F"  J131,91[:480,0:-2,2:2,-2:-2,-2:179,75K:491,0:131,83S:0,-5:-2,2:2,-2:2,2:130,86V:480,0:0,1:0,-2:0,1:480,0 "F10 ,19;"l";12 ,25;"l":5,0;:S1 -FR*LN*2;" Nm.": 2fr*ln;" Nm.": 7FR*LN^2;" Nm.": < "162 Nm": AFR*LN;" J.": F~"THE MOMENT OF A COUPLE IS TWICE THE FORCE TIMES THE DISTANCE OF THE LINE OF ACTION OF THE FORCE TO THE CENTRE OF ROTATION." w x7J=5:"THE VELOCITY RATIO OF A MACHINE IS: ":S1 c"THE DISTANCE MOVED BY THE EFFORT DIVIDED BY THAT MOVED BY THE LOAD IN THE SAME TIME.": K"THE SPEED OF MOVEMENT OF THE EFFORT TO THE SPEED OF THE LOAD.": N"THE RELATIVE RATES OF ENERGY INPUT TO THE LOAD AND THE MACHINE.": ""THE RATIO OF EFFORT TO LOAD.": ""THE RATIO OF LOAD TO EFFORT.": "THE DISTANCE MOVED BY THE EFFORTDIVIDED BY THE CORRESPONDING DISTANCE THE LOAD MOVES IS TERMED THE VELOCITY RATIO OF THEMACHINE."  ܥJ=6:DN=(*90Z+810*):"A BODY, OF ";DN;" kg/m DENSITY,"'"FLOATS ON A LIQUID OF DENSITY 1000 kg/m. WHAT FRACTION OF THEBODY IS SUBMERGED? ":S1 DN/10 ;"%": DN/1000: DN/100d:  .01z# =*(100000CP/DN):  (1000-DN)/10 ;"%": "1 m OF THE BODY WILL HAVE A MASS OF ";DN;" kg. AS IT FLOATS IT WILL DISPLACE AN EQUAL MASS OF THE LIQUID AND THIS IS ";DN;" m." ? @MJ=8:"A VERY GOOD REFLECTOR OF INFRA- RED RAYS ('HEAT' RAYS) IS:":S1 Y"POLISHED ALUMINIUM.": ^ "SAND.": c "SNOW.": h"ANYTHING PAINTED WHITE.": m"ANYTHING PAINTED BLACK.": rv"POLISHED ALUMINIUM REFLECTS WITH 99% EFFICIENCY IN THE INFRA-RED REGION OF THE ELECTRO-MAGNETIC SPECTRUM."  J=9 :PR=(*100d+200):AN=(293%*PR/100d-273.5):"500 cm OF AIR AT 20C AND A PRESSURE OF 100 kPa IS SEALED INA STEEL VESSEL."'"TO WHAT TEMPERATURE MUST THE AIRBE RAISED SO AS TO PRODUCE A PRESSURE OF ";PR;" kPa?":S1  AN;"C.":  AN;" K.": AN+273;"C.": AN+293%;" K.":  "175C.": G"THE REQUIRED TEMPERATURE IS:"''" ";PR;"*(20+273)/100-273 = ";AN;"C"  AJ=10 :"WHEN WATER VAPOUR CONDENSES ON ACOOL SURFACE:":S1 !!"THE SURFACE WARMS SLIGHTLY.": &"THE WATER FORMED IS HOT.": +."THE WATER GAINS HEAT FROM THE SURFACE.": 0/"THE WATER INCREASES ITS HEAT CAPACITY.": 5>"THE WATER TEMPERATURE RISES UP TO ITS BOILING POINT.": :k"THE SURFACE IS WARMED BY THE LATENT HEAT OF CONDENSATION THATIS RELEASED AS LIQUID WATER IS FORMED." k lBJ=12 :"THE QUALITY OF A MUSICAL SOUND IS CALLED ITS:":S1  "TIMBRE.":  "PITCH.": "RESONANCE.": "AMPLITUDE.": "REVERBERATION.": "A MUSICAL SOUND COMPRISES MANY HIGHER FREQUENCIES, CALLED OVERTONES OR HARMONICS, WHICH IMPART TO IT ITS CHARACTERISTIC SOUND, i.e. ITS TIMBRE."  вJ=14:"A LIGHT RAY INCIDENT ON A GLASS SURFACE AT AN ANGLE i TO THE NORMAL IS REFRACED AT AN ANGLE rIN THE GLASS."'"WHICH OF THE FOLLOWING RELATIONSIS CONSTANT?":S1  "i/r":  "i/r":  "(i/r)":  "i+r":  "i/r": "THE RATIO OF THE SINE OF THE ANGLE OF INCIDENCE TO THE SINE OF THE ANGLE OF REFRACTION IS A CONSTANT CALLED THE REFRACTIVECONSTANT OF THE GLASS." 3 4J=16:CR=.01z# =*(*90Z+100d):VL=.01z# =*(*300,+200):"THE INTERNAL RESISTANCE OF THE AMMETER, A, IN THE CIRCUIT SHOWNIS 0.2 . WHAT IS THE VALUE OF THE RESISTANCE Rx IF THE AMMETERREADS ";CR;" A AND V IS ";VL;" V?" >160,64@:0,35#:59;,0:0,-8:219,76L:0,-8:13 ,20;"<";:163,67C:513,0:-2,-2:2,2:-2,2 @8,23;"Rx";9 ,21;" ";11 ,27;"A";13 ,23;"V":219,83S,7:168,99c:8000@:4,0 B7,0;:S1 M:AN=.01z# =*((VL-CR*.2~L)*100d/CR):AN;" ": RAN-0.2~L;" ": WAN+.2~L;" ": \%.02{# =*(100d*VL/CR);" ": a%.01z# =*(100d*CR/VL);" ": fp"ACCOUNT MUST BE TAKEN OF THE LOSS OF POTENTIAL CAUSED BY THE INTERNAL RESISTANCE (0.2 ) OF THE AMMETER." pL'"THE VALUE OF Rx IS GIVEN BY:"''" (";VL;"-0.2*";CR;")/";CR;" = ";AN;" ."  J=14:FL=(*200+502):"WHAT IS THE RADIUS OF CURVATURE OF A CONVERGING MIRROR IF ITS FOCAL LENGTH IS ";FL;" cm?":S1 FL*2;" cm": FL/2;" cm":  "35 cm": -FL*2;" cm":  "-48 cm": h"FOR A CONVERGING MIRROR THE RADIUS OF CURVATURE IS TWICE THEFOCAL LENGTH, i.e. ";2*FL;" cm"  ^J=17:"THE MAGNETIC FIELD BETWEEN TWO NORTH POLES HELD CLOSE TO EACH OTHER HAS:":S1 #"A NEUTRAL POINT BETWEEN THEM.": "INCREASED ATTRACTION.": 6"SYMMETRY ABOUT A LINE THAT JOINS THE POLES.": $8"ORIGIN AT A POINT MIDWAY BETWEEN THE POLES.": )"A KINETIC ENERGY CONTENT.": .~"BETWEEN OPPOSING MAGNETIC POLES THERE IS A POINT WHERE THEIR MAGNETIC FIELDS BALANCE EXACTLY;THIS IS THE NEUTRAL POINT." _ `wJ=18:"IN A TRANSFORMER THE VOLTAGE AT THE SECONDARY WINDING DEPENDS ONTHE PRIMARY COIL VOLTAGE AS WELLAS:":S1 yB"THE TURNS RATIO AND INTERNAL RESISTANCE OF THE SECONDARY.": ~"THE TURNS RATIO ONLY.": "THE SECONDARY LOAD.": ,"THE EFFICIENCY OF THE TRANS- FORMER": "THE MAINS FREQUENCY.": "THE TURNS RATIO WILL SET THE SECONDARY VOLTAGE WHEN THERE IS NO LOAD CONNECTED TO IT. WHEN, HOWEVER, A CURRENT IS DRAWN FROMTHE TRANSFORMER, THE SECONDARY VOLTAGE IS REDUCED BECAUSE OF THE INTERNAL RESISTANCE."  MJ=19:"WHICH OF THE FOLLOWING DEVICES CAN CONVERT a.c. TO d.c.?":S1 "A RECTIFIER.": "A CAPACITOR.": "A TRANSFORMER.": "A RESISTOR.": "AN INDUCTOR.": "AN ALTERNATING CURRENT (a.c.) FLOWS BACKWARDS AND FORMWARDS IN A CONDUCTOR AT A FIXED RATE (50 Hz FOR MAINS ELECTRICITY). A RECTIFIER IS A DEVICE WHICH ALLOWS THE CURRENT TO FLOW IN ONE DIRECTION BUT NOT THE OTHER." l'"A RECTIFIER CAN, THEREFORE, CHANGE AN ALTERNATING CURRENT TOONE THAT FLOWS ONE WAY ONLY (d.c.)." ' (YJ=20:"WHICH OF THE FOLLOWING DESCRIBESA POSITIVELY CHARGED CONDUCTOR BEST?":S1 A@"IT HAS FEWER FREE ELECTRONS THAN AN EARTHED CONDUCTOR.": F?"IT HAS MORE POSITIVE CHARGES THAN A NEUTRAL CONDUCTOR.": K4"IT HAS BEEN RUBBED BY A WOOLLEN CLOTH.": P6"IT HAS BEEN CHARGED WITH A POSITIVE CHARGE.": U8"IT ATTRACTS A NEGATIVELY CHARGED CONDUCTOR.": Z"TO STATE THAT THE POSITIVELY CHARGED CONDUCTOR HAS FEWER FREEELECTRONS THAN ONE THAT IS EARTHED SHOWS AN UNDERSTANDING OF THE NATURE OF THE POSITIVE CHARGE AND THAT AN EARTHED CONNECTION IS TAKEN AS HAVING ZERO NET CHARGE."  JJ=21:"THE HALF-LIFE OF A RADIOACTIVE ELEMENT DESCRIBES ITS:":S1 "RATE OF DECAY.": "ATOMIC STRUCTURE.": "BACKGROUND RADIOACTIVITY.": "CONCNETRATION.": "RADIATION POWER.": b"THE RATE AT WHICH THE ACTIVITY OF A RADIOACTIVE ELEMENT DECAYS IS MEASURED AS THE HALF- LIFE." Ȑ'"THE HALF-LIFE IS HOW LONG IT TAKES FOR THE ACTIVITY OF THE RADIOACTIVE ELEMENT TO FALL TO ONE HALF OF ITS VALUE AT ANY GIVEN TIME."  J=12 :MS=.001wn*(*4+1):"A TENSIONED STRING, HAVING A MASS OF ";MS;" kg/m VIBRATES AT"'"200 Hz. WHAT FREQUENCY WOULD BE"'"SOUNDED FROM A STRING HAVING A"'"MASS OF ";MS*2;" kg/m?":S1 "141 Hz":  "100 Hz":  "400 Hz":  "283 Hz":  "14.1 Hz": ""FOR A CONSTANT TENSION AND A FIXED LENGTH THE STRING WILL VIBRATE AT A FREQUENCY WHICH IS INVERSLY PROPORTIONAL TO THE SQUARE ROOT OF THE MASS PER UNITLENGTH." ,'"IN THIS CASE THE MASS PER UNIT LENGTH IS ";MS;" kg/m AND IT"'"DOUBLES IN VALUE."''"THE FREQUENCY WILL FALL IN THE RATIO OF THE SQUARE ROOT OF 2:"''" 200/1.41 = 142 Hz." S T0J=8:"THE STANDARD UNIT OF HEAT IS:":S1 m "JOULE.": r"CALORIE.": w "Nm.": | "Ws.": "KELVIN.": #"HEAT IS MEASURED IN JOULES (J)."  J=10 :WT=(*4+5):TM=33!*(*7+3):AN=TM*WT/330J:"WHAT MASS OF WATER IS MELTED BY AN ELECTRIC HEATER DELIVERING"'WT;" kW FOR ";TM;" s TO ICE AT 0C?"''"(Latent heat of fusion of ice is 330 kJ/kg.)":S1 AN;" kg": an+.2~L;" kg": an-.2~L;" kg": an/wt;" kg": "37.52 kg": n"1 kg OF ICE NEEDS 330 kJ TO MELTAND THE HEATING ELEMENT PROVIDES";WT;" kW FOR ";TM;" s, i.e. ";TM*WT;" kJ." E'"THE MASS OF ICE MELTED IS:"''" ";TM;"*";WT;"/330 = ";AN;" kg."  J=14:OL=(*502+20):IL=OL+(*502+20):"WHAT IS THE SIZE OF THE IMAGE FORMED FROM AN 11 cm OBJECT IF THE OBJECT DISTANCE IS ";OL;" cm"'"AND THE IMAGE IS ";IL;" cm FROM"'"THE OBJECT?":S1 52an=.05|L*(100d*OL/(IL-OL)):an;" cm": :an+.1}L;" cm": ?an-.1}L;" cm": D&.05|L*(100d*ol/il);" cm": I "2.34 cm": NZ"THE IMAGE/OBJECT RATIO IS EQUAL TO THE OBJECT DISTANCE DIVIDED BY THE IMAGE DISTANCE." XG'"IN THIS CASE THE IMAGE DISTANCE IS (";Il;"-";OL;") = ";Il-OL;" cm." bI'"THIS GIVES THE IMAGE SIZE AS:"''" 5*";OL;"/";IL-OL;" = ";AN;" cm."  cJ=16:"HOW MANY 1 RESISTORS MUST BE USED IN COMBINATION TO GIVE A VALUE OF 2.5 ?":S1 "4": "3": "5": "8": "7": "THE CIRCUIT IS:" ?24,83S:8,0:8000@:16,0:8000@:8,0:0,16:8,0:8000@:8,0:0,-16:16,0:-16,0:0,-16:136,83S:0,-16:8,0:8000@:8,0 Z8,19;"1 ";10 ,5;"1 ";12 ;"1 ";12 ,19;"1 "  J=6:"WHAT IS THE PRESSURE AT A DEPTH OF 10 m UNDER WATER OF DENSITY 1000 kg/m WHEN ATMOSPHERIC PRESSURE IS 100 kPa?"'"(Take 'g' = 9.8 m/s.)":S1 "198 kPa.":  "98 kPa.": "100 98 Pa.": "100 kPa.":  "198 Pa.": |"THE PRESSURE AT A DEPTH IS THE DEPTH TIMES THE DENSITY OF THE LIQUID TIMES 'g' ADDED TO THE PRESSURE AT THE SURFACE." ='"HERE THE VALUES ARE:"''" 10*1000*9.8 + 100000 = 198 kPa." G HJ=3:FR=(*700+300,):"A BODY RESTING ON A HORIZONTAL SURFACE IS JUST MOVED BY A FORCEOF ";FR;" N. WHAT FORCE WILL BE"'"REQUIRED WHEN A WEIGHT EQUAL TO THAT OF THE BODY IS PLACED ON TOP OF IT?":S1 a2*FR;" N": f2*FR+1;" N": k2*FR-3;" N": p FR;" N": uFR/2;" N": zl"TWICE THE FORCE IS NEEDED TO OVERCOME THE STATIC FRICTION OF THE LOAD WHEN THE WEIGHT IS DOUBLED."  >J=14:"WHICH OF THE FOLLOWING IS A TRUESTATEMENT:":S1 >"PRISMS ARE USED IN BINOCULARS TO SHORTEN THEIR LENGTH.": 3"A SHAVING MIRROR HAS A SHORT FOCAL LENGTH.": r"WHEN VIEWED THROUGH THE WATER SURFACE FISH APPEAR TO BE AT A GREATER DEPTH THAN THEY REALLLY ARE.": ""A MIRAGE IS ALWAYS INVERTED.": U"THE REFRACTIVE CONSTANT OF GLASS IS GREATER FOR RED THAN FOR BLUE LIGHT.": ޫ"THE PRISMS IN THE OPTICAL SYSTEMOF BINOCULARS SERVE TO SHORTEN ITS PHYSICAL LENGTH. THEY ALSO 'RECTIFY' THE IMAGE SO THAT IT IS SEEN UPRIGHT AND CORRECTLY HANDED."  yJ=8:"WHICH OF THE FOLLOWING UNITS IS USED FOR MEASURING THE SPECIFIC LATENT HEAT OF SUBLIMATION OF A SOLID?":S1 ) "kJ/kg": . "kJ/kgK": 3"kJ": 8 "kg/kJ": = "W/kg": B"LIKE EVAPORATION AND FUSION, THE LATENT HEAT OF SUBLIMATION IS THE HEAT REQUIRED TO TURN ONEKILOGRAMME OF THE SUBSTANCE INTOVAPOUR." L%'"IT IS MEASURED IN J/kg OR kJ/kg." s tJ=16:WT=(*4):"WHAT ELECTRIC CURRENT PASSES THROUGH A ";("40"WT=0);("60"WT=1);("100"WT=2);("150"WT=3);" W LIGHT BULB WHEN"'"CONNECTED TO THE MAINS VOLTAGE OF 240 V?":S1 Y("0.16"WT=0);("0.25"WT=1);("0.42"WT=2);("0.625"WT=3);" A":  "0.20 A":  "0.18 A":  "1.4 A":  "0.83 A": 0"THE WATTAGE IS THE CURRENT TIMESTHE VOLTAGE." <'"TO FIND THE CURRENT DIVIDE THE WATTAGE BY THE VOLTAGE."  ؞J=12 :"A BELL JAR WITH A BATTERY DRIVENBUZZER WORKING IN IT HAS ALL ITSAIR GRADUALLY PUMPED OUT. WHICH OF THE FOLLOWING CAN BE EXPECTEDTO HAPPEN?":S1 7"THE BUZZER WILL GRADUALLY BECOME INAUDIBLE.": :"THE PITCH OF THE BUZZER WILL SLOWLY FALL TO ZERO.": ."THE BUZZER WILL SUDDENLY STOP WORKING.": 7"THE BUZZER WILL SLOWLY GO COMPLETELY BLACK.": A"WHEN ALL THE AIR IS REMOVED THE BELL JAR WILL RESONATE.":  "SOUND TRAVELS IN AIR AND WHEN THIS IS REMOVED THE SOUND CANNOTBE HEARD. AS THE AIR IS REMOVED SLOWLY, THE SOUND WILL BECOME LESS AND LESS AUDIBLE AND IN THEEND QUITE SILENT." ; "X-RAYS TRAVEL FASTER THAN INFRA-RED RAYS IN SPACE.": ҭ"USING THE INITIALS FOR THE COLOURS THE MNEMONIC:"''" R O Y G B I V"''"LISTS THE COLOURS IN ORDER OF INCREASING FREQUENCY AND IN DECREASING WAVELENGTH." '"(I = Indigo.)"  >J=14:"THE IMAGE FORMED BY A PLANE MIRROR IS:":S1 "LEFT TO RIGHT INVERTED.": ""INVERTED.": ' "REAL.": ,!"REAL AND BEHIND THE MIRROR.": 1"VERTICALLY DIMINISHED.": 6m"THE LEFT SIDE APPEARS TO THE VIEWER AS THE RIGHT SIDE. THE IMAGE IS THEREFORE LEFT TO RIGHTINVERTED." g hgJ=19:"WHY DOES THE GRID SYSTEM HAVE TO TRANSMIT ELECTRICAL POWER AT VERY HIGH VOLTAGES.":S1 1"TO MINIMISE POWER LOSSES IN THE CABLES.": 9"TO PROVIDE HIGH POWER TO THE TOWNS AND VILLAGES.": 0"BECAUSE THE PYLONS ARE WELL INSULATED.": "IT IS CHEAPER TO INSTALL.": ="BECAUSE ELECTRICITY TRAVELS FASTER AT HIGH VOLTAGE.": y"THE VERY HIGH VOLTAGES REDUCE THE CURRENT IN THE CABLES AND THIS IN TURN REDUCES THE POWER LOSSES IN THE CABLES."  ̫J=1:"A BODY HAVING A MASS OF 12 kg"'"JUST FLOATS IN A LIQUID HAVING A DENSITY OF 780 kg/m."''"WHICH OF THE FOLLOWING IS A CORRECT CONCLUSION FROM THIS?":S4 <K=1:"THE BODY'S DENSITY IS THAT OF THE LIQUID.": ;K=1:"THE VOLUME OF THE BODY IS 0.0154 m.": FK=1:"THE MASS OF LIQUID DISPLACED BY THE BODY IS 12 kg.": c"THE MASS OF LIQUID IS EQUAL TO THE MASS OF THE BODY BECAUSE THEBODY IS STATED TO 'JUST FLOAT'." 4'"THE VOLUME DISPLACED IS 12/780, i.e. 0.0154 m." ]'"SINCE THE BODY NEITHER SINKS NORFLOATS ABOVE THE LIQUID, THEIR DENSITIES MUST BE EQUAL." / 0YJ=3:"WHICH OF THESE STATEMENTS IS TRUE OF A BODY FALLING FREELY INSPACE?":S4 IDK=1:"IT ACCELERATES TOWARDS THE BODY ATTRACTING IT.": N*K=1:"ITS WEIGHT WOULD BE ZERO.": SHK=1:"THE WEIGHT OF EVERYTHING IN THE BODY WOULD BE ZERO.": bW"DURING FREE FALL THE WEIGHT OF THE FALLING BODY AND ALL ITS COMPONENTS IS ZERO." l>'"IT MUST BE ACCELERATED TOWARDS THE OBJECT ATTRACTING IT."  J=4:"A SPRING IS STRETCHED 20 cm BY A10 N LOAD WITHIN THE SPRING'S ELASTIC LIMIT."'"WHICH OF THE FOLLOWING IS A VALID CONCLUSION FROM THIS STATEMENT?":S4 CK=1:"THE WORK DONE IN STRETCHING THE SPRING IS 1 J.": NK=1:"THE SPRING NOW STORES MORE POTENTIAL ENERGY THAN BEFORE.": 7k=1:"A LOAD OF 5 N MUST STRETCH IT 10 cm.": ƶ"THE WORK DONE IS THE FORCE TIMESITS DISPLACEMENT. HOWEVER, IN THIS CASE THE AVERAGE FORCE SHOULD BE USED AS THE SPRING'S RESISTANCE STARTS AT 0 AND INCREASES TO 10 N." ='"THE WORK DONE IS, THEREFORE:"''" *10*0.2 = 1 Nm OR 1J." U"THE WORK DONE IN STRETCHING THE SPRING IS LARGELY STORED AS POTENTIAL ENERGY." ^'"AS THE ELASTIC LIMIT HAS NOT BEEN EXCEEDED THE 5 N LOAD WOULDSTRETCH THE SPRING 10 cm."  J=6:"IN A HYDRAULIC JACK THE MASTER CLYINDER HAS A DIAMETER OF 5 mm AND THAT TO THE SLAVE CYLINDER IS 25 mm. WHICH OF THE FOLLOWINGCONCLUSIONS MAY BE REACHED FROM THIS INFORMATION?":S4 <K=1:"THE VELOCITY RATIO OF THE JACK IS 25.": NK=1:"THE MECHANICAL ADVANTAGE OF THE JACK RATHER LESS THAN 25.": bK=1:"A LOAD OF 2500 N WILL REQUIRE AN EFFORT OF RATHER MORE THAN 100 N TO LIFT IT.": *j"THE VELOCITY RATIO IS, IN THIS CASE, THE RATIO OF THE CYLINDER AREAS:"''" *(*25)/*(*5) = 25." 4b'"THE MECHANICAL ADVANTAGE IS JUSTLESS THAN 25 BECAUSE HYDRAULIC SYSTEMS HAVE HIGH EFFICIENCY." >{'"SINCE THE MECHANICAL ADVANTAGE IS JUST LESS THAN 25, A LOAD OF 2500 N WILL NEED RATHER MORE THAN 100 N TO LIFT IT." [ \jJ=8:"WHICH OF THE FOLLOWING IS TRUE OF THE SPACE ABOVE THE MERCURY IN A MERCURY BAROMETER?":S4 u"IT IS A PERFECT VACUUM. ": zP"IT IS ALWAYS 100mm WHEN THE PRESSURE IF EXACTLY EQUAL TO 101.3 kPa.": kK=1:"IT VARIES WITH TEMPERATURE CHANGES BECAUSE OF VARIATIONS IN THE DENSITY OF MERCURY.": "A TEMPERATURE COMPENSATION IS NEEDED FOR THE MORE ACCURATE MEASUREMENTS OF ATMOSPHERIC PRESSURE BECAUSE OF CHANGES IN THE DENSITY OF MERCURY."  'J=10 :"WHEN WATER FREEZES:":S4 K=1:"IT EXPANDS.": !K=1:"IT ABSORBS HEAT.":  "ITS MOLECULES STOP MOVING.": "THE EXPANSION OF WATER AS IT FORMS ICE IS A MAJOR HAZARD IN WINTER AS IT CAUSES BURST PIPES WHICH MAKE THEMSELVES EVIDENT WHEN THE THAW SETS IN." ^"ALL LIQUIDS RELEASE HEAT DURING THEIR FREEZING PROCESS. THIS IS THE LATENT HEAT OF FUSION." # $SJ=9 :"A BIMETALLIC STRIP IS USED IN THERMOSTAT CONSTRUCTION BECAUSE:":S4 =eK=1:"IT GIVES A STRONG MECHANICAL MOVEMENT IN RESPONDING TO TEMPERATURE CHANGES.": BK=1:"IT IS STABLE OVER WIDE RANGES OF TEMPERATURES AND IT GIVES REPRODUCIBLE RESPONSES OVER LONG PERIODS OF TIME.": GJK=1:"IT IS INEXPENSIVE AND NEEDS LITTLE OR NO MAINTENANCE.": V}"ALL THREE FACTORS MAKE THE USE OF BIMETALLIC STRIPS FOR THE MEASUREMENT AND CONTROL OF TEMPERTAURE VERY GENERAL." `'"BIMETALLIC STRIPS SUFFER FROM A HIGH THERMAL CAPACITY AND THISMAKES THEIR RESPONSE TO RAPID CHANGES OF TEMPERATURE RATHER SLUGGISH."  *J=12 :"A STATIONARY WAVE HAS:":S4 K=1:"FIXED NODES.": !K=1:"FIXED FREQUENCY.": "A FIXED AMPLITUDE.": "MOST RESONANT SYSTEMS HAVE A STANDING WAVE PATTERN. THE NODALPOINTS ARE FIXED AND BOTH THE WAVELENGTH AND FREUENCY ARE FIXED FOR A PARTICULAR RESONANT CONDITION."  $J=13 :"LIGHT WAVES ARE:":S4 ,K=1:"ELECTROMAGENTIC VIBRATIONS.":  ;K=1:"VISIBLE ELECTROMAGNETIC RADIATION.": +K=1:"ABSORBED BY A BLACK BODY. ": "ALL ELECTROMAGNETIC VIBRATIONS TRAVEL WITH THE SPEED OF LIGHT- THE GREATEST KNOWN PHYSICAL VELOCITY. LIGHT IS THAT NARROW RANGE OF FREQUENCIES OF THE ELECTROMAGNETIC SPECTRUM THAT ISVISIBLE TO THE HUMAN EYE." (7'"A BLACK BODY WOULD ABSORB ALL VISIBLE RADIATION." O PdJ=14:"THE HIGH EFFICIENCY OF TOTAL INTERNAL REFLECTION IS USED IN GLASS PRISMS TO:":S4 i'K=1:"TURN LIGHT THOUGH 90.": n)K=1:"TURN LIGHT THROUGH 180.": sIK=1:"INVERT AN OPTICAL IMAGE SO THAT IT APPEARS UPRIGHT.": o"BOTH 90 AND 180 REFLECTIONS CAN BE OBTAINED WITH A 90 GLASSPRISM USING TOTAL INTERNAL REFLECTION." '"IN BINOCULARS, APART FROM MAKINGTHE INSTRUMENT MUCH SHORTER, THEPRISMS INVERT THE IMAGE FORMED BY THE OBJECT GLASSES TO GIVE AN UPRIGHT VIEW OF THE SCENE BEING SIGHTED."  YJ=16:"WHEN A 200 mA ELECTRIC CURRENT FLOWS THROUGH A RESISTANCE OF 47 :":S4 ]K=1:"A POTENTIAL DIFFERECE OF 9.4 V IS DEVELOPED ACROSS THE RESISTANCE. ": <K=1:"1.88 W ARE DISSIPATED IN THE RESISTANCE.": T"235 J OF HEAT ARE PRODUCED DURING EVERY SECOND THAT THE CURRENT FLOWS.": "THE POTENTIAL DIFFERENCE THAT ISDEVELOPED ACROSS THE RESISTANCE IS THE PRODUCT OF THE CURRENT, IN AMPERES, AND THE RESISTANCE, IN OHMS:"''" 0.2*47 = 9.4 V." '"THE POWER DISSIPATED IN THE RESISTANCE IS GIVEN BY THE SQUARE OF THE CURRENT TIMES THE RESISTANCE:"''" (0.2)*47 = 1.88 W."  HJ=18:"WHICH OF THE FOLLOWING IS TRUE OF AN ELECTROMAGNET?":S4 1fK=1:"ITS MAGNETIC FIELD INCREASES AS THE SQUARE OF THE NUMBER OF TURNS IN ITS COIL.": 6ZK=1:"IF THE CURRENT IS REVERSED THE MAGNETIC POLARITY IS ALSO REVERSED.": ;ZK=1:"THE MAGNETIC FLUX FLOWS FROM SOUTH TO NORTH POLE INSIDE THE COIL.": J"ALL THREE POINTS ARE TRUE. THE WIRE RESISTANCE AND PHYSICAL SIZE OF THE ELECTROMAGNET LIMIT THE NUMBER OF TURNS THAT CAN BE WOUND, HOWEVER." { |bJ=17:"A HARD STEEL PERMANENT MAGNET CAN HAVE ITS MAGNETISM REMOVED COMPLETELY BY:":S4 (K=1:"HEATING IT ABOVE 800C.": !"HAMMERING ITS OUT OF SHAPE.": "BENDING IT INTO A CIRCLE.": n"HEATING THE STEEL ABOVE THE CURIE POINT (ABOUT 760C FOR STEEL) WILL REMOVE ALL TRACES OFMAGNETISM."  EJ=20:"ELECTRONS IN THE VACUUM OF A CATHODE RAY TUBE:":S4 ;K=1:"TRAVEL FROM THE CATHODE TO THE ANODE.": #"MOVE WITH THE SPEED OF LIGHT.": 5"CANNOT BE DEFLECTED BY A MAGNETIC FIELD.": "ELECTRONS ARE NEGATIVE CHARGES OF ELECTRICITY AND ARE REPELLED BY THE NEGATIVE CATHODE AND ATTRACTED BY THE POSITIVE ANODE." C DJ=10 :"700 g OF BOILING WATER WERE MIXED WITH 300 g OF WATER AT 0C. THE MIXTURE:";19,0;"(The specific thermal capacity of water is 4.18 kJ/kgK)";11 ,0;:S4 ]+K=1:"HAD A TEMPERATURE OF 70C.": b6K=1:"THE HOT WATER LOST 87.8 kJ OF HEAT.": g:"THE COLD WATER GAINED A TOTAL OF 177.6 kJ OF HEAT.": vc"THE FINAL TEMPERATURE OF THE MIXTURE IS CALCULATED FROM:"''" 0.7*(100-t)*4.18=0.3*(t-0)*4.18" L'"WHERE t IS THE FINAL TEMPERATUREOF THE MIXTURE."''"THIS GIVES t = 70C." J'"THE HEAT LOST BY THE HOT WATER IS:"''" 0.7*(100-70)*4.18 = 87.8 kJ."  _J=21:"WHICH OF THE FOLLOWING IS TRUE OF EMISSIONS FROM RADIOACTIVE SUBSTANCES?":S4 DK=1:"GAMMA-RAYS ARE NOT DEFLECTED BY MAGNETIC FIELDS.": v"ALPHA-RAYS ARE ATTRACTED BY A POSITIVELY CHARGED PLATE THUS SHOWING THAT THEY HAVE A NEGATIVE CHARGE.": 8"BETA-RAYS ARE VERY SHORT LIVED IN A VACUUM.": a"GAMMA-RAYS HAVE NO ELECTRIC CHARGE AND SO ARE UNAFFECTED BY ELECTRIC AND MAGNETIC FIELDS."    NJ=14:"WHEN A RAY OF WHITE LIGHT IS DEVIATED BY A GLASS PRISM:":S4 %BK=1:"BLUE LIGHT IS DEVIATED MORE THAN GREEN LIGHT.": *jK=1:"THE COLOURS CAN BE RECOMBINED WITH ANOTHER INVERTED PRISM PLACED NEXT TO THE FIRST.": /nK=1:"THE SEPARATION OF WHITE LIGHT INTO ALL THE COLOURS OF THE RAINBOW IS CALLED DISPERSION.": >D"THE DEVIATION IS GREATEST FOR COLOURS WITH HIGHER FREQUENCIES." H'"THAT THE COLOURS CAN BE COMBINEDAGAIN TO MAKE WHITE LIGHT PROVESTHAT WHITE LIGHT IS MADE UP OF ALL THE COLOURS OF THE RAINBOW." RV'"DISPERSION IS THE DIFFERENCE IN REFRACTION OF THE DIFFERENT COLOURS OF LIGHT." o @~0,4:40(,0:0,-7:-40(,0:0,3:23677}\,23677}\+40(: %M=(*5+1) %&:Y=04:A$(3*Y+13*Y+3);:V+5*N$(Y+M)+20:N$(Y+M)=1Q$=A$(3*Y+1) %0Y:S3 %M=(*5+1) %sY=04:V+5*N$(M+Y)+20:A$(3*Y+1):N$(Y+M)=1Q$=A$(3*Y+1) %Y:S3 % M=1+3*(*2) %:TT=0:Y=02:B$(3*Y+1);". ";:K=0:V+5*M$(M+Y)+20:TT=TT+(Y+2)*(K>0) %Y:Q$=C$(TT-1):S3 %2,0;3;"A";9 ;"B";15;"C";21;"D";27;"E":,," 1,2,3";8;"1,2";14;"2,3";21;"1";27;"3":" ALL ONLY ONLY ONLY ONLY":" RIGHT RIGHT RIGHT RIGHT RIGHT" %r4,117u:238,0:4,149:238,0:4,165:238,0 %AO=4244480:O,165:0,-480:O &: &H&W$:RT=1q$=" ":9840p& &R9N(J)=N(J)+1:W$=Q$W$=(Q$+32 )9890& &\#1;"NO- ";Q$;: &fB#1;" YOUR SCORE IS ";ANS;"/";Q'"PRESS 'ENTER'";:0 &pW$Q$W$(Q$+32 )RT=0:6:6::V+502:"ENTER 'Y' TO REVIEW THE QUESTIONPRESS 'ENTER' TO GO ON.";I$:I$="Y"I$="y"RT=1:9870& &zQ=5029900& &*V=V+100d:Q=(V-900)/100d &A7:7::"QUESTION ";Q;"."::Q34"9700% &V &WANS=ANS+1:20,0;"CORRECT- ";Q$;".";:S(J)=S(J)+1:9830f& &b20,0;"PRESS 'ENTER' FOR TEST RESULTS.":0::10 ,0;"YOU HAVE:- "; &S=ANS:2;("FAILED-"S23);("UNGRADED"S8);("GRADE "S>8S<23);("E"S>8S16);("D"S>16S23);0;("PASSED-GRADE "S>23);("C"S>23S34");("B"S>34"S41));("A"S>41)) &M17,0;"PRESS 'ENTER' FOR AN ANALYSIS OFYOUR TEST RESULTS":P$: &J=021:J,0;1;("MECHANICS"J=0);0;("Units-Vectors-Density"J=1);("Particulate Matter"J=2);("Motion"J=3);("Static Systems"J=4);("Work-Energy-Power"J=5);("Pressure-Flotation"J=6); &ԍJ,0;1;("HEAT"J=7);0;("Nature-Units-Transfer"J=8);("Expansion"J=9 );("Heating Changes"J=10 ); &ޛJ,0;1;("WAVES-SOUND-LIGHT"J=11 );0;("Vibrations-Waves"J=12 );("Electromagnetic Waves"J=13 );("Optics"J=14); &J,0;1;("ELECTRICITY-MAGNETISM"J=15);0;("e.m.f.-Currents"J=16);("Magnetism"J=17);("Electromagnetics"J=18);("Domestic Electricity"J=19);("Electrostatic Charges"J=20);("The Atom"J=21); &DI=-1:J>0J7J11 J15I=S(J)/N(J) &J,22;2;("VERY BAD"I=0);("POOR"I>0I.3);("AVERAGE"I>.3I.6);("GOOD"I>.6I.85Y);1;5;("EXCELLENT"I>.85Y); 'J '0::S<45-6,0;"YOU HAVE NOT REACHED GRADE 'A' STANDARD."::"YOU ARE ADVISED TO REPEAT THIS TEST UNTIL YOU DO ATTAIN THAT GRADE.";16,0;"PRESS 'ENTER' TO TRY AGAIN.":5000:502 'q"YOU HAVE REACHED A GOOD STANDARDIN THIS TEST. START THE TAPE AND THEN PRESS 'ENTER' TO LOAD THE NEXT ONE." ' "" '"PHYSICS 6"5 qHn%%H&%%v  d&% fff.Ffffl̶ xn4$0% ksiN 2514325143M123321AA. B. C. D. E. B 1. 2. 3. qq CD EB C ADQAWIP PHYSICS 1 yy{{ A0:0:0:0:5:5:0: 5,8;" P H Y S I C S "''15;"7";11 ,1;"THIS PROGRAM TAKES ABOUT THREE "''" MINUTES TO LOAD COMPLETELY" Y2:255,0:0,175:-255,0:0,-175 2*5:5:0,0:"" <"PHYSICS 1"1 0 PANEL 1 >>f@ 0:5:5::3,12 ;"PAPER I";''9 ;"REVISION TEST";10 ,1;"YOU ARE NOT PERMITTED THE USE OF AN ELECTRONIC CALCULATOR OR ANY AID TO HELP WITH NUMERICAL CALCULATIONS."''" USE SPARE PAPER FOR ROUGH WORK IF NECESSARY." 5:5:"" <"PANEL 1"1 ^PANEL 2 ##el% 5:5:0: 2,0;" PACING YOURSELF IN A MULTIPLE CHOICE EXAMINATION IS OF GREAT IMPORTANCE FOR SUCCESS. MOST CANDIDATES WORK TOO QUICKLY AND FREQUENTLY FAIL TO READ THE QUESTIONS PROPERLY." ''" AS YOU ARE NOW EFFICIENT AT ANSWERING QUESTIONS OF THIS TYPE MAKE A POINT OF READING THE QUESTION ONCE AGAIN JUST BEFORE ENTERING THE ANSWER YOU HAVE CHOSEN. MAKE SURE YOU HAVE A CHANCE TO 'THINK AGAIN'." 2"5:0,0;:"" <"PANEL 2"1 7PHYSICS 7 Βt(В7:7:0: l0:10 ,3;" S T O P T H E T A P E ";13 ,4;"PRESS ANY KEY TO GO ON." #.5,34":""20  10 q:''" TO ANSWER THE QUESTIONS:"''" 1. PRESS THE LETTER FOR THE ANSWER YOU CHOOSE."''" 2. PRESS 'ENTER'." #G'''"YOU CAN CHANGE YOUR ANSWER BY USING 'DELETE' IN THE USUAL WAY." (:20,1;"NOW PRESS 'ENTER' TO START.":0 2:BX=8000@:N$="2514325143":M$="123321":A$="A. B. C. D. E. ":B$="1. 2. 3. "::S(22):N(22):Q=1:"QUESTION 1."::ANS=0 <S1=9500%:S2=9600%:S3=9800H&:S4=9650%:S5=9700%:RT=0:C$="D EB C A":V=1000:200:V ?:M=112 :D$:N=07:D:D$+N,D:N:M K"",32 ,80P,16,32 ,112p,0,0,0 J"",96`,16,32 ,16,96`,0,0,0 M"",16,16,16,124|,480,8,16,568 I"",480,72H,72H,480,0,0,0,0 Q"",0,96`,102f,102f,231,102f,102f,96` I"",0,0,32 ,80P,136,5,2,0 L"",0,2,124|,168,40(,40(,40(,0 M"",0,34",502,58:,255,58:,502,34" "P"",16,254,254,0,254,254,16,16 ,I"",0,480,8,8,20,34",65A,0 6L"",0,60<,66B,66B,66B,36$,231,0 @K"",0,16,16,16,84T,568,16,0  ?J=1:"THE RATE OF CHANGE OF VELOCITY IS TERMED:"::S1 "ACCELERATION.":  "SPEED.":  "MOMENTUM.":  "FORCE.": "DISTANCE.": B"THE RATE OF CHANGE OF VELOCITY IS THE ACCELERATION OF A BODY." K LMJ=2:"A LIQUID CAN FLOW ALONG A PIPE BECAUSE ITS PARTICLES ARE:":S1 e#"ABLE TO MOVE PAST EACH OTHER.": j2"FURTHER APART THAN IN THE SOLID STATE.": o"MORE ENERGETIC.": t6"MOVING MORE RAPIDLY THAN IN THE SOLID STATE.": y!"CONDENSED CLOSELY TOGETHER.": ~"THE ABILITY OF PARTICLES IN A LIQUID TO MOVE PAST EACH OTHER AND YET REMAIN CLOSELY PACKED ALLOWS A LIQUID TO FLOW AND STILL RETAIN THE HIGH DENSITY THAT DISTINGUISHES IT FROM GASES."  XJ=3:"IN A FREE FALL EXPERIMENT THE VALUE OF 'g' MAY BE CALCULATED FROM:":S1 "g = 2h/t": "h = h/2t": "g = h/t": "g = 2t/h": "g = h/2t": 2"THE EQUATION FOR FREE FALL IS:"''" h = gt" M'"BY MULTIPLYING BOTH SIDES BY 2 THE EQUATION CHANGES TO:"''" 2h = gt" Q'"FINALLY BY DIVIDING BOTH SIDES BY t THE EQUATION BECOMES:"''" 2h/t = g"  dJ=4:"THE CROSS SECION OF A ROD LYING ALONG A SURFACE REPRESENTS THREEKINDS OF EQUILIBRIUM:" 162,110n:502,0:187,115s,4:93],110n:502,0,/3:117u,108l,4:20,104h:502,0,-/3:45-,116t,4  11 ,0;:S1 -"UNSTABLE, STABLE, NEUTRAL": 2 "STABLE, NEUTRAL, UNSTABLE,": 7"UNSTABLE, NEUTRAL,STABLE": <"STABLE, UNSTABLE, NEUTRAL": A"NEUTRAL, UNSTABLE, STABLE": F"STABLE EQUILIBRIUM ARISES WHEN AFTER A SMALL DISPLACEMENT FROM THE EQUILIBRIUM POSITION THE BODY RETURNS TO IT UNAIDED." P'"NEUTRAL EQUILIBRIUM ARISES WHEN AFTER A SMALL DISPLACEMENT FROM THE EQUILIBRIUM POSITION THE BODY REMAINS AT THE NEW LOCATIONINDEFINETLY." Z'"UNSTABLE EQUILIBRIUM WILL CAUSE A SMALL DISCPLACEMENT FROM THE EQUILIBRIUM POSITION TO BECOME MUCH GREATER WITHOUT FURTHER ASSISTANCE." w xJ=5:pw=(*6+3):"A MACHINE WITH A ";pw;" kW MOTOR IS WORKING AT 60% EFFICIENCY. HOW LONG WILL IT TAKE IT TO RAISE A 1000 N LOAD THROUGH 10 m?":S1 "10/";PW*.6;" s": "10/";pw;" s":  "10/60 s": pw;"/10 s": pw*.6;"/10 s": 3"THE WORK TO BE DONE IS:"''" 1000*10 = 10 kJ." ]'"THE MACHINE DELIVERS POWER AT THE RATE OF:"''" ";PW;"*60/100 = ";PW*.6;" kJ/s" C'"THE TIME TO LIFT THE LOAD WILL BE:"''" 10/";.6*PW;" s"  ܭJ=6:"AN OBJECT HAS A MASS OF 120 kg AND A DENSITY OF 1200 kg/m. IT IS IMMERSED IN A CONATINER FULL OF WATER."''"THE VOLUME OF WATER THAT OVERFLOWS IS:":S1  "0.1 m":  "10 m":  "0.12 m":  "0.1 l":  "10 dm": :"THE VOLUME OF THE OBJECT IS:"''" 120/1200 = 0.1 m." /'"THE SAME VOLUME OF WATER IS DISPLACED." ? @;J=8:"MERCURY IS USED IN THERMOMETERS BECAUSE:":S1 YB"IT EXPANDS UNIFORMLY OVER A WIDE RANGE OF TEMEPERATURES.": ^"IT HAS A HIGH DENSITY.": c."IT IS SILVERY AND EASILY VISIBLE.": h,"MERCURY EXPANDS MORE THAN GLASS.": m"IT BOALS ABOVE 100C.": r"IT IS THE UNIFORM EXPANSION OF MERCURY OVER A WIDE RANGE OF TEMPERATURES THAT MAKES IT SO SUITABLE FOR THERMOMETRIC WORK."  J=9 :"A 1 m LONG METAL BAR IS HEATED FROM 0C TO 100C AND IS SEEN TOEXPAND 2 mm. THE EXPANSIVITY OF THE METAL IS:":S1 "0.00002 /K": "0.002 /K": "0.002 /100 K": "0.0005 /K": "2 mm/m'C": ["FOR 1 m OF THE METAL BAR THE EXPANSIVITY IS GIVEN BY:"''" 0.002/1/100 = 0.00002/K"  J=10 :"THE SPECIFIC HEAT CAPACITY OF METALS 'A' AND 'B' ARE 0.2 AND 0.3 kJ/kgK RESPECTIVELY. WHEN BOTH METALS ARE HEATED THROUGH A 10C RISE:":S1 !""'B' GETS MORE HEAT THEN 'A'.": &"'A' GETS HOTTER THAN 'B'.": ++"BOTH GET THE SAME QUANTITY OF HEAT.": 0-"THE MASS OF 'A' IS 2/3 THAT OF 'B'.": 5-"THE MASS OF 'B' IS 2/3 THAT OF 'A'.": :"THE SPECIFIC HEAT OF 'A' BEING LESS THAN THAT OF 'B' MEANS THATIT NEEDS LESS HEAT TO REACH THE SAME TEMPERATURE, SO 'B' GETS MORE HEAT THAN 'A'." k lJ=12 :"A 1 m LONG STEEL ROD RESONATES AT A FUNDAMENTAL FREQUENCY OF 2500 Hz. WHAT IS THE SPEED OF SOUND IN STEEL?":S1  "5 km/s.": "2500 m/s.": "10000 m/s.":  "2 m/s.": "1250 m/s.": R"THE STEEL ROD(RESONATES WITH A NODE AT EACH END AND AN ANTINODEAT ITS MIDDLE:" hN=015:5;4,8+N;" ";5,8+N;" ":N:6,14;"/2" ~M=01:66B,135:N=010 :11 ,.4L*(5-N)*(1-2*(M=1)):N:M o''"THE WAVELENGTH IS THEREFORE 2 m AND THIS MAKES THE VELOCITY OF SOUND IN STEEL:"''" 2 * 2500 = 5 km/s."  {J=14:"A SHEET OF BRIGHT YELLOW PAPER IS PLACED IN PURE BLUE LIGHT. THE COLOUR OF THE SHEET WILL APPEAR:":S1  "BLACK.":  "GREEN.":  "BLUE.":  "YELLOW.":  "CYAN.": {"SINCE THE PAPER IS YELLOW ALL THE OTHER COLOURS WILL HAVE BEENABSORBED BY IT LEAVING ONLY THE YELLOW LIGHT REFLECTED."  E'"PURE BLUE LIGHT WILL BE ABSORBEDAND THE SHEET WILL APPEAR BLACK." 3 4J=16:"AN AMMETER HAVING A FULL SCALE DEFLECTION OF 5 mA IS SHUNTED BY A 22.2 RESISTANCE. THE FULLSCALE CURRENT THEN CHANGES TO 50 mA. WHAT IS THE RESISTANCE OFTHE AMMETER?":S1 M "200 ": R "205 ": W "1.11 ": \ "10 ": a "222 ": fj"THE AMMETER PASSES 0.005 A AT FULL SCALE DEFLECTION REGARDLESSOF THE CURRENT FLOWING IN THE SHUNT." p'"AS THE TOTAL CURRENT IS 0.050 A THE CURRENT IN THE SHUFT MUST BE0.045 A. THIS MAKES THE VOLTAGE ACROSS THE SHUNT AND THE AMMETEREQUAL TO:" z'" 22.2 * 0.045 = 1 V." M''"CONSEQUENTLY THE RESISTANCE OF THE AMMETER IS:"''" 1/0.005 = 200 ."  rJ=14:"A BEAM OF LIGHT PARALLEL TO THE OPTICAL AXIS OF A CONVERGING LENS IS BROUGHT TO A FOCUS AT:":S1 +"THE PRINCIPAL FOCUS OF THE LENS.": #"THE FOCAL LENGTH OF THE LENS.": "THE CENTRE OF THE LENS.": "AT THE IMAGE POINT.": ="AT A POINT DEPENDING ON THE POSITION OF THE OBJECT.": v"THE PRINCIPAL FOCUS IS THE POINTAT WHICH RAYS PARALLEL TO THE OPTICAL AXIS ARE BROUGHT TO A FOCUS BY THE LENS."  BJ=17:"WHEN A BAR MAGNET IS CUT IN HALFTHE RESULT IS:":S1 "TWO BAR MAGNETS.": ,"SEPARATE NORTH AND SOUTH POLES.": 9"ONE BAR MAGNET AND A PIECE OF UNMAGNETISED STEEL.": $ "A TOTAL LOSS OF MAGNETISM.": )L"A MAGNET WITH TWO NORTH POLES AND ANOTHER WITH TWO SOUTH POLES.": .^"THE MAGNETIC FIELD INSIDE THE MAGNET IS CUT AND THE RESULT IS TWO, SMALLER, BAR MAGNETS." _ `YJ=18:"A STEP UP TRANSFORMER HAS A TURNS RATIO OF 10:1. THIS MEANS THAT:":S1 yW"240 V a.c. APPLIED TO THE PRIMARY WILL PRODUCE 2400 V IN THE SECONDARY.": ~6"THE POWER RATIO BETWEEN THE WINDINGS IS 10:1": P"THE CURRENT IN THE PRIMARY WILL BE TEN TIMES THAT IN THE SECONDARY.": V"THE POWER LOSS IN THE CORE IS A TENTH OF THAT DELIVERED BY THE TRANSFORMER.": \"FOR EVERY TEN TURNS IN THE PRIMARY WINDING THERE IS ONE TURN IN THE SECONDARY.": "THE SECONDARY VOLTAGE WILL BE TEN TIMES THAT OF THE PRIMARY ASTHE RATIO OF THE VOLTAGES THAT ARE INDUCED IN THE WINDINGS IS PROPORTIONAL TO THE NUMBER OF TURNS IN THEM."  EJ=19:"WHICH OF THESE APPLIANCES SHOULDBE FUSED AT 13 A?":S1 "A 2.4 kW WASHING MACHINE.": "A 400 W MICROWAVE OVEN.": "A 250 W VACUUM CLEANER.": "A 1 kW ELECTRIC FIRE.": "A 600 W LAWN MOWER.": m"THE 2.4 kW WASHING MACHINE WILL,WORKING FROM THE 240 V MAINS, USE A CURRENT OF:"''" 2400/240 = 10 A." {''"THIS APPLIANCE SHOULD BE FUSED AT 13 A TO PROTECT AGAINST ANY OVERLOAD OF CURRENT WHICH COULD CAUSE SERIOUS DAMAGE." ' (J=20:"A CHARGED SPHERE IS CONNECTED TOA SHARP METALLIC POINT BY MEANS OF AN INSULATED CONDUCTOR. THE EFFECT ON THE CHARGED SPHERE IS:":S1 AM"TO DISCHARGE IT RAPIDLY AT FIRST THEN PROGRESSIVELY MORE SLOWLY.": F3"TO INDUCE CHARGES WITH IT IN OTHER PLACES.": K^"TO SEPARATE THE CHARGES ON IT WITH THE NEGATIVE CARGE GOING TOWARDS THE POINT.": P""TO IONISE THE AIR AROUND IT.": U"TO INCREASE ITS CHARGE.": Z"A SHARP POINT DEVELOPS A VERY HIGH CHARGE DENSITY ON IT AND THIS ALLOWS THE CHARGE TO LEAK AWAY INTO THE AIR BY IONISATION OF THE AIR MOLECULES." d'"THE RESULT ON THE CHARGED SPHEREIS TO DISCHARGE IT, QUICKLY AT FIRST AND THEN MORE SLOWLY AS THE REMAINING CHARGE IS REDUCED."  cJ=21:"WHEN A RADIOACTIVE NUCLEUS EMITSA BETA PARTICLE THE RESULT ON THE NUCLEUS IS:":S1 @"AN INCREASE OF ONE IN ATOMIC NUMBER AND NO MASS CHANGE.": A"A DECREASE OF ONE IN ATOMIC NUMBER AND NO LOSS OF MASS.": M"THE LOSS OF TWO MASS UNITS AND NO CHANGE IN THE ATOMIC NUMBER.": "ATOMIC FISSION.": "A LOSS OF ONE PROTON.": "AS THE BETA PARTICLE IS CREATED AND EJECTED AT HIGH SPEED FROM THE NUCLEUS, A NEUTRON CHANGES TO A PROTON AND SO THE ATOMIC NUMBER INCREASES BY ONE." Ȋ'"THERE IS NO SIGNIFICANT CHANGE IN THE MASS OF THE NUCLEUS AS THE BETA PARTICLE, A HIGH SPEED ELECTRON, HAS PRACTICALLY NO MASS."  eJ=12 :"IN THE DIAGRAM WHICH LETTER REFERS TO THE AMPLITUDE OF THE WAVE?":2810 :S2 27,6;"^";7,16;"^";12 ,6;"";17,16;"";13 ,1;"<";5;">";14,1;"<";11 ;">";15,1;"<";20;">";7,1;"^";8,1;"Y";19,1;"(Y = DISPLACEMENT)";13 ,25;"TIME(s)" 11 ,513:152,0:11 ,59;:80P,0:11 ,67C:32 ,0:131,37%:0,80P:513,72H:0,46. 5,30:0,88X:252,72H:-244,0:9 ,72H:N=0502:4,7*(.159~"`*N):N  10 ,6;: 11 ,16;: 13 ,3;: 14,6;: 15,11 ;: "1"THE AMPLITUDE IS HALF THE TOTAL DISPLACEMENT:" ,]7,6;"^";12 ,6;"":513,73I:0,44,:2814 S TJJ=8:"WHICH OF THE FOLLOWING SURFACES WILL ABSORB LIGHT BEST?":S1 m#"ALUMINIUM PAINTED MATT BLACK.": r,"CARDBOARD PAINTED GLOSSY WHITE.": w"PAPER PAINTED DARK GREEN.": |"WOOD PAINTED DARK BLUE.": "SHEET STEEL PAINTED RED.": "MATT BLACK ABSORBS ALL THE WAVELENGTHS OF LIGHT TO A HIGH DEGREE AND FROM ALL ANGLES. THE PROPORTION OF LIGHT FALLING ON SUCH A SURFACE AND THEN BEING REFLECTED BACK IS ABOUT 3%."  9J=10 :"WHEN WATER FREEZES ITS MOLECULESWILL:":S1 N"FORM A THREE DIMENSIONAL REGULAR PATTERN BUT STILL VIBRATE.": A"FORM A THREE DIMENSIONAL PATTERN AND STOP VIBRATING.": ="FORM A SOLID CLOSE-PACKED SYSTEM AND STOP MOVING.": M"STOP MOVING IN THE RANDOM POSITIONS THEY HAD IN THE LIQUID.": "LOSE POTENTIAL ENERGY.": "THE TRANSITION FROM LIQUID TO SOLID STATE DURING FREEZING CHANGES THE FREE MOVING WATER MOLECULES INTO A THREE DIMENSIONREGULAR STRUCTURE. THE MOLECULESSTILL CONTINUE TO MOVE, HOWEVER,BUT THE MOVEMENT IS A VIBRATION ABOUT A MEAN POSITION."  J=14:"A RAY OF LIGHT MAKES AN ANGLE OF 30 WITH A MIRROR WHICH REFLECTS IT. IF THE MIRROR TURNSTHROUGH AN ANGLE OF 10 THE REFLECTED RAY WILL TURN THROUGH:":S1 5 "20": : "10": ?"5": D"0": I "40": NO"THE REFLECTED RAY TURNS THROUGH TWICE THE ANGLE OF ROTATION OF THE MIRROR."  mJ=16:"WHAT IS THE RESISTANCE OF THE NETWORK SHOWN?":BR=0:3210 :7,0;:S1 112p,71G:12 ,0:0,-28:34",0:BX:34",0:0,28:12 ,0:-12 ,0:0,27:124|,71G:0,27:9 ,0:BX:10 ,0:BX:9 ,0 IBR;8,17;"3.8 2.4 ";0;17,20;"1.2 "  "1.0 ": "1.2 ": "1.4 ": "7.4 ": "5.0 ": "FIRST THE TWO SERIES RESISTORS ARE ADDED:":BR=1:3210 :"PRESS 'ENTER'.";I$:N=031:0,N;" ";1,N;" ":N 8,16;29;9 ,16;29;10 ,16;29:126~,98b:32 ,0:BX:32 ,0:8,20;"6.2 " d0,0;"THEN THE TWO PARALLEL RESISTORS ARE COMBINED:"''" 1/Rc = 1/6.2 + 1/1.2 = 0.995" '"GIVING Rc = 1.0 "  J=6:"WHAT IS THE PRESSURE DIFFERENCE BETWEEN THE POINTS X AND Y IF THE MANOMETER IS FILLED WITH A LIQUID OF DENSITY 13600 kg/m?"'"(Take 'g' as 9.8 m/s)" =HT=(*90Z+10 ):3310 :8,0:S1 n=05:175+n,86V+(n2n3):0,-78N-(n2n3)+n:24-2*n,0:0,21+2*(n2n3)-n:n 175,110n:0,-30:5,0:0,30:194,110n:0,-80P:5,0:0,80P 11 ,23;"^";17,23;"";11 ,26;"h=";ht;"mm":187,36$:0,45-:14,23;"h":11 ,20;"X";17,26;"Y"  6an=.01z# =*(13.33UG*ht+.5):an;" kPa": '.001wn*(133.3L*ht);" kPa": .13~R*ht;" kPa": 133.8;" kPa": $.01z# =*(13.6Y*ht);" Pa": {"THE PRESSURE IS THE PRODUCT OF THE HEIGHT, 0";HT/1000;" m, TIMES THE"'"DENSITY, 13600 kg/m, TIMES 'g',9.8 m/s:" 4'"(0";HT/1000;"*13600*9.8)/1000=";AN;" kPa." G HJ=3:"A VEHICLE OF 750 kg MASS TRAVELSAT 15 m/s WHEN THE BRAKES ARE APPLIED WITH A STOPPING POWER OF16.875 kW. HOW LONG DOES IT TAKETO STOP THE VEHICLE?":S1 a "5 s": f "20 s": k "0.667 s": p "10 s": u "9.8 s": zx"THE BRAKING POWER WILL BRING THEKINETIC ENERGY OF THE VEHICLE TOZERO: THIS WILL TAKE:"''" *750*(15)/16.875 = 5 S."  J=14:"AN OBJECT, IMMERSED TO A DEPTH OF 6 m APPEARS TO HAVE A DEPTH OF 4.5 m WHEN VIEWED FROM ABOVE THE SURFACE OF THE LIQUID."'"WHAT IS THE REFRACTIVE CONSTANT OF THE LIQUID?":S1 "1.33": "0.75": "1.25": "1.33876": "1.339": z"THE REFRACTIVE CONSTANT OF THE LIQUID IS SIMPLY THE RATIO OF THE REAL TO THE APPARENT DEPTH:"''" n = 6/4.5 = 1.33"  'J=8:"HEAT IS MEASURED IN:":S1 ) "JOULES": ."NEWTON METRES": 3"WATTS-SECONDS": 8"VOLT-COULOMBS": = "Pa/m": B@"THE JOULE IS SPECIFICALLY USED FOR THE MEASUREMENT OF HEAT." s tJ=16:"USING ONLY 3 RESISTORS IN A COMBINATION OF THREE AT A TIME, WHICH SET OF RESISTANCE VALUES COULD BE OBTAINED?":S1 "1, 2, 4.5,AND 9 ONLY.": "1,5 AND 9 ONLY.": #"3,6,9 AND 2 AMONGST OTHERS.": "9 ONLY.": "1, 2, 3, 4 AND 9 .": "THE CIRCUITS ARE:" 16,91[:10 ,0:BX:10 ,0:0,16:7,0:BX:7,0::0,-16:8,0:-8,0:0,-16:76L,91[:0,-16:7,0:BX:7,0:O$="3 " 176,123{:18,0:BX:4,0:0,16:190,139:4,0:BX:4,0:190,139:0,-32 :4,0:BX:4,0:0,16:8,0 h10 ,139:10 ,0:BX:12 ,0:BX:12 ,0:BX:10 ,0 26,31:8,0:0,12 :31,0:BX:31,0:0,-12 :8,0:-8,0:0,-12 :34",31:0,-12 :7,0:BX:8,0:BX:7,0 7,11 ;O$;9 ,4;O$;11 ,11 ;O$;15,10 ;O$;18,6;O$;12 ;O$:N=02:3+2*N,25;O$:N:N=013 6:3,3+N;O$:N ~1;5,7;" = 9 ";9 ,23;" = 1 ";13 ,6;" = 4.5 ";20,6;" = 2 ";  آJ=12 :"A STRING IS MADE TO VIBRATE AT ITS FUNDAMENTAL PITCH OF 440 Hz.WHAT FREQUENCY WILL BE HEARD IF A NODE IS INDUCED AT ONE THIRD OF ITS LENGTH?":S1  "1320 Hz":  "880 Hz":  "220 Hz":  "342 Hz":  "1760 Hz":  "INDUCING A NODE AT ONE THIRD OF THE LENGTH OF THE STRING MAKES THE WAVELENGTH ONE THIRD OF THE ORIGINAL VALUE AND THE FREQUENCYRISES THREE FOLD TO 1320 Hz." 131,568:0,-32 :131,106j:0,-32 :33!,106j:0,-32 :33!,568:0,-32 :34",86V:196,0:34",37%:196,0 p33!,86V:N=031:(N>16N=2*(N/2));6,4*(.205~Q*N):N (o34",38&:N=094^:(N>47/N=2*(N/2));2,4*(0.2~L*N):N ; <J=14:"IN THE DIAGRAM THE POLE OF THE MIRROR, ITS CENTRE OF CURVATURE AND ITS PRINCIPAL FOCUS ARE, IN THAT ORDER, AT:":3910F:7,0;:S1 F 227,69E:0,2:120x,70F:120x,0:220,38&:0,64@,/4:132,69E:0,2:180,69E:0,2:12 ,16;"1";12 ,22;"2";12 ,29;"3" H U"3, 1, 2.": Z"1, 3, 2.": _"2, 3, 1.": d"2, 1, 3.": i"3, 2, 1.": n"THE POLE IS THE POINT WHERE THE OPTICAL AXIS MEETS THE SURFACE OF THE MIRROR. THE PRINCIPAL FOCUS IS MIDWAY BETWEEN THE POLEAND THE CENTRE OF CURVATURE." xR3910F:12 ,16;"C";12 ,22;"F";12 ,29;"P"  J=13 :"WHILE A SOUND WAVE IS TRAVELLINGFROM THE SOURCE TO THE LISTNER IT LOSES SOME OF ITS LOUDNESS ON THE WAY. THE WAVE HAS BEEN:":S1 "ATTENUATED.": "DIMINISHED.": "DISSIPATED.": "REDUCED.":  "DIMMED.": C"IN ACOUSTICS THE REDUCTION OF SOUND INTENSITY IS ATTENUATION."  {J=14:"AN UPRIGHT PIN PLACED BETWEEN TWO MIRRORS AT 60, AS SHOWN, CREATES:":4110:6,0;:S1 ,13 ,17;"P":149,64@ 146,89Y:46.,-23:-46.,-23:N=046.4:146+N,42*+N/2:0,-2:146+N,90Z-N/2:0,2:N: "FIVE IMAGES.": ""THREE IMAGES.": '"FOUR IMAGES.": ,"SIX IMAGES.": 1"TWO IMAGES.": 6"THE NUMBER OF IMAGES IS FOUND SIMPLY BY DIVIDING 360 BY THE ANGLE BETWEEN THE MIRRORS AND SUBTRACTING ONE FOR THE OBJECT." @r4110:174,104h:212,104h:174,27:212,27:232,64@ g hJ=19:"WHAT IS THE COST OF BOILING WATER IN A 2.4 kW ELECTRIC KETTLE FIVE TIMES A DAY FOR A WHOLE QUARTER WHEN THE PRICE OF ELECTRICITY IS 5.75 p PER UNIT AND IT TAKES THE KETTLE 90 s TO BOIL THE WATER?":S1  "`1.57":  "`18.84":  "`62.79":  "`0.79":  "`106.70": \"A QUARTER IA 91 DAYS. THE NUMBEROF TIMES THE KETTLE IS BOILED INA QUARTER IS 5*91 = 455." '"THE NUMBER OF UNITS CONSUMED IN A QUARTER WHEN THE 2.4 kW KETTLETAKES 1.5 min TO BOIL IS:"''" 455*(1.5/60)*2.4 = 27.3 kWh." $'"THE COST IS 27.3*0.0575 = `1.57"  ̛J=1:"A BODY WEIGHS 35 N IN AIR AND 27 N UNDER WATER. IF THE DENSITYOF WATER IS 1000 kg/m WHICH OF THE FOLLOWING STATEMENTS IS CORRECT?":S4 Jk=1:"THE DENSITY OF THE BODY IS APPROXIMATELY 4380 kg/m.": 8K=1:"THE UPTHRUST FROM THE WATER IS 8 N.":  "THE BODY'S VOLUME IS 8 m.": R"THE UPTHRUST IS SIMPLY THE WEIGHT IN AIR LESS THE WEIGHT IN THE LIQUID." '"THE RATIO OF THE WEIGHT IN AIR TO THE WEIGHT OF WATER THAT THE BODY DISPLACES (THE UPTHRUST) IS STRICTLY THE RELATIVE DENSITYOF THE BODY. THE TRUE DENSITY, TO A CLOSE APPROXIMATION, EQUALSTHE RELATIVE DENSITY MULTIPLIED BY 10000." / 0;J=3:"WHICH OF THESE DEFINITIONS IS CORRECT?":S4 IDK=1:"SPEED IS THE RATE OF CHANGE DISTANCE WITH TIME.": NVK=1:"VELOCITY IS THE RATE OF CHANGE OF DISPLACEMENT WITH TIME.": SNK=1:"ACCELERATION IS THE RATE OF CHANGE OF VELOCITY WITH TIME.": b"ALL THREE ARE CORRECT."  J=4:"THE DIAGRAM SHOWS A 13 m BEAM SUSPENDED AT EACH END FROM TWO SPRING BALANCES, GIVING READINGS'A' AND'B' AND CARRYING A LOAD PLACED 3 m FROM ONE END.":4510:13 ,0;:S4 r15,19;"A";28;"B";17,18;"<";25;">< >";20,24;6;"LOAD" N=01:144+96`*N,70F:0,-6:-4,0:0,-20:8,0:0,20:-4,0:N A147,35#:568,0:208,27:0,-10 :-18,0:0,-11 :36$,0:0,11 :-16,0:211,35#:24,0:144,27:96`,0:144,44,:0,-16:96`,0:0,16 N=01:M=06:145+96`*N,480+2*M:1,0:M:N:17,27;"3m";17,21;"8m"  K=1:"A + B = LOAD.": *K=1:"THE RATIO"'" A:B = 3:7.": "A - B = 4": B"THE SUM OF THE READINGS OF 'A' AND 'B' EQUALS THE TOTAL LOAD." '"THE FORCE 'B' ACTS ABOUT THE END'A' WITH A MOMENT 13*B. THE LOADALSO ACTS ABOUT 'A' AND ITS MOMENT IS 7*(LOAD). AS THE BEAM DOES NOT ROTATE THESE MOMENTS MUST BE EQUAL:"''" 13*B = 7*(LOAD) (i)" o4510:"PRESS 'ENTER'.";I$:N=09 :12 +N,0;" ":N T12 ,0;"SIMILARLY IT CAN BE SHOWN THAT:"''" 13*A = 3*(LOAD) (ii)" <'"DIVIDING (ii) BY (i) GIVES THE RATIO:"''" A:B = 3:7"  J=6:"A HYDROMETER WITH A 20 cm STEM GRADUATED IN mm READS 8 mm IN A LIQUID OF DENSITY 1020 kg/m AND142 mm IN A LIQUID OF DENSITY 896 kg/m.":S4 JK=1:"IN A LIQUID WITH A DENSITY OF 960 kg/m IT READS 73 mm.": GK=1:"WHEN THE DENSITY IS 850 kg/m THE READING IS 192 mm.": mK=1:"LIQUIDS HAVING DENSITIES LESS THAN 840 kg/m CANNOT BE GAUGED WITH THIS HYDROMETER.": *_"THE CHANGE OF DENSITY FROM 1020 TO 896 kg/m PRODUCES A RISE IN THE STEM OF 142-8 = 134 mm." 4C"A CHANGE OF 1 kg/m PRODUCES A RISE OF 134/(1020-896)=1.08 mm." >X'"A LIQUID OF DENSITY 960 kg/m WILL CAUSE A FALL OF:"''" (960-896)*1.08 = 69 mm" H#'"THE STEM READS 142+96 = 73 mm." R'"SIMILARLY A LIQUID OF DENSITY 850 kg/mWILL READ 192 mm BUT A LIQUID WITH A DENSITY OF LESS THAN 843 kg/m WILL READ MORE THAN 20 cm, THE GRADUATED LENGTHOF THE STEM." [ \>J=8:"CHOOSE THE CORRECT STATEMENT FROM THESE:":S4 u<K=1:"ALL SUBSTANCES ABSORB ENERGY ON HEATING.": z."ALL SUBSTANCES EXPAND ON HEATING.": ."ALL SUBSTANCES GET HOTTER ON HEATING.": "CERTAINLY THEY ABSORB ENERGY ON HEATING IN ALL CASES BUT MANY SUBSTANCES CONTRACT ON HEATING OVER LIMITED TEMPERATURE RANGES e.g. WATER BETWEEN 0 AND 4C." x'"THE TEMPERATURE OF SUBSTANCES ASTHEY CHANGE STATE, e.g. MELTING,DOES NOT CHANGE EVEN THOUGH THEYARE BEING HEATED."  SJ=10 :"AS A VOLATILE LIQUID EVAPORATES IN A CURRENT OF AIR THE LIQUID:":S4 =K=1:"COOLS TO A LOWER EQUILIBRIUM TEMPERATURE.": K=1:"LOSES ENERGY.": !"LOSES MASS AT A FIXED RATE.": c"THE LIQUID ABSORBS HEAT FROM ITSSURROUNDINGS AS IT EVAPORATES CAUSING A FALL IN TEMPERATURE." '"SOON, HOWEVER, THE TEMPERATURE FALL WILL STOP AS AN EQUILIBRIUMIS REACHED BETWEEN THE HEAT THATIS REMOVED BY EVAPORATION AND THAT WHICH IS SUPPLIED BY THE SURROUNDINGS BECAUSE OF THE TEMPERTAURE DIFFERENCE." B'"THE LIQUID LOSES LATENT HEAT OF VAPORISATION ALL THE TIME." '"THE RATE OF LOSS OF LIQUID IS GREATEST AT THE START AND SLOWLYREDUCES TO AN EQUILIBRIUM VALUE CONTROLLED BY THE RATE OF HEAT SUPPLIED BY THE SURROUNDINGS."; # $J=9 :"A FLASK COMPLETELY FILLED WITH WATER IS SLOWLY WARMED. THE WATER LEVEL FALLS SLIGHTLY AT FIRST THEN RISES AND OVERFLOWS."'"WHICH OF THESE STATEMENTS IS CORRECT?":S4 =HK=1:"THE WATER STARTED BELOW 4C AND FINISHED ABOVE 4C.": BbK=1:"INITIALLY THE FLASK EXPANDED MORE THAN THE WATER BUT LATER IT EXPANDED LESS.": GMK=1:"WATER SHOWS ANOMALOUS THERMAL EXPANSION BUT NOT THE FLASK.": VT"THE QUESTION HIGHLIGHTS THE VERYUNUSUAL EXPANSION BEHAVIOUR OF WATER BELOW 4C."  (J=12 :"A MUSICAL SOUND HAS:":S4 $K=1:"REGULAR VIBRATIONS.": %K=1:"AMPLITUDE AND PITCH.": *K=1:"THE CAPACITY TO RESONATE.": "TO BE MUSICAL THE VIBRATIONS MAKING THE SOUND MUST BE REGULARAND THEREFORE HAVE A FREQUENCY. PITCH AND AMPLITUDE NECESSARILY FOLLOW." Đ'"ONLY REGULAR VIBRATIONS CAN GIVERISE TO RESONACE. THE RESONATOR REQUIRES A SERIES OF REGULAR, 'IN STEP', STIMULATIONS IN ORDERTO RESPOND."  J=13 :"A SERIES OF RIPPLES WITH A WAVE-LENGTH OF 0.5 cm APPROACH THREE APERTURES, SET SIDE BY SIDE:"''"A- 5 cm, B- 0.5 cm AND C- 1 mm."''" WHICH RESULTS WILL BE OBSERVED?":S4 JK=1:"A WILL ALLOW THE WAVE THROUGH BUT WITH EDGE DISTORTION.":  NK=1:"B WILL ACT AS A NEW SOURCE OF WAVES OF THE SAME WAVELENGTH.": )K=1:"C WILL ACT AS A BARRIER.": "ALL THREE ANSWERS ARE CORRECT. IT IS THE RELATIONSHIP BETWEEN THE SIZE OF THE APERTURE AND THEWAVELENGTH THAT IS HIGHLIGHTED. WHEN THE APERTURE FALLS BELOW A QUARTER OF THE WAVELENGHT IT MIGHT AS WELL NOT BE THERE." O PQJ=14:"A RAINBOW IS CREATED BY SUNLIGHTFALLING ON RAINDROPS BECAUSE:":S4 i]K=1:"LIGHT REFRACTION BY WATER IS DIFFERENT FOR DIFFERENT WAVELENGTHS.": nLK=1:"THERE IS TOTAL INTERNAL REFLECTION IN THE RAINDROP.": s"RAINDROPS ARE SPHERICAL.": "THE DISPERSION OF LIGHT BY WATERACCOUNTS FOR THE COLOURS AND THETOTAL INTERNAL REFLECTION OF THESUNLIGHT BY THE WATER DROPLETS ACCOUNTS FOR THE RAINBOW'S VERY BRIGHT APPEARENCE."  LJ=16:"A 2 , A 5 AND A 7 RESISTOR CAN BE COMBINED TO MAKE:":S4 K=1:"14 ": K=1:"1.2 ": K=1:"4.9 ": "THE CIRCUITS ARE:" 16,91[:10 ,0:BX:10 ,0:0,16:7,0:BX:7,0::0,-16:8,0:-8,0:0,-16:76L,91[:0,-16:7,0:BX:7,0:O$="3 " 176,123{:18,0:BX:4,0:0,16:190,139:4,0:BX:4,0:190,139:0,-32 :4,0:BX:4,0:0,16:8,0 h10 ,139:10 ,0:BX:12 ,0:BX:12 ,0:BX:10 ,0 7,11 ;"5 ";9 ,4;"2 ";11 ,11 ;"7 ":N=02:3+2*N,25;2+2*N+(N>0);" ":N:N=02:3,3+7*N;2+2*N+(N>1);" ":N b1;5,6;" = 14 ";9 ,22;" = 1.2 ";13 ,7;" = 4.9 "  J=17:"THE FIELD AROUND A BAR MAGNET CAN BE MADE VISIBLE BY COVERING THE MAGNET WITH A SHEET OF PAPERAND SPRINKLING SOME IRON FILINGSOVER IT. THE PATTERN CAN BE MADECLEARER BY:":S4 18K=1:"TAPPING THE PAPER SHEET VERY GENTLY.": 6$"USING MAGNETIZED IRON FILINGS.": ;L"PLACING THE BAR MAGNET AT 90 TO THE EARTH'S MAGNETIC FIELD.": J}"TAPPING THE SHEET OF PAPER VERY GENTLY INDEED WILL GRADUALLY BRING UP A CLEAR DISPLAY OF THE INVISIBLE MAGNETIC FIELD." { |hJ=18:"WHICH OF THE FOLLOWING FACTORS ASSISTS THE MAGNETIC FIELD WHICHA SOLENOID PRODUCES?":S4 CK=1:"INCREASING THE NUMBER OF TURNS IN THE COIL.": JK=1:"WINDING THE DEVICE CLOSELY TO MAKE THE SMALLEST VOLUME.": 6K=1:"USING AN INTERNAL SOFT IRON CORE.": M"THE MAGNETIC FIELD VARIES AS THESQUARE OF THE NUMBER OF TURNS INTHE COIL." '"A MORE COMPACT WINDING ASSISTS THE CONCENTRATION OF MAGNETIC FLUX BUT THE EFFECT IS NOT VERY MARKED AND MAY CREATE HEATING PROBLEMS IN THE CENTRE OF THE COIL." n'"AN INTERNAL SOFT IRON CORE IS A GREAT FACTOR IN CONCENTRATING THE MAGNETIC FIELD PRODUCED BY THE COIL."  `J=20:"IN WHICH OF THE FOLLOWING PLACESIS THE ELECTROSTATIC CHARGE ALWAYS ZERO?":S4 7K=1:"A BRASS SPHERE CONNECTED TO EARTH.": NK=1:"THE INSIDE OF A CONICAL WIRE NET HAVING A NEGATIVE CHARGE.": aK=1:"THE INSIDE OF AN INSULATED HOLLOW METAL SPHERE WITH A POSITIVE CHARGE.": 7"AN EARTHED CONDUCTING BODY IS, OF COURSE, NEUTRAL." L'"THE INSIDE OF ANY HOLLOW BODY, WHETHER CHARGED OR NOT, HAS NO CHARGE." C D;J=10 :"WHEN SALT IS SPRINKLED ONTO ICE AT 0C:":S4 ]'K=1:"SOME OF THE ICE MELTS.": b'K=1:"THE TEMPERATURE DROPS.": g4"A SOLID SOLUTION OF SALT IN ICE IS FORMED.": v"ANY SOLUTE (DISSOLVED SUBSTANCE)WILL LOWER THE FREEZING POINT OFWATER. THUS THE SALT WILL MELT SOME OF THE ICE AND AT THE SAME TIME THE TEMPERATURE WILL FALL BELOW 0C."  (J=21:"IN THE NEUTRAL ATOM:":S4 YK=1:"THE EXTERNAL ELECTRONS EQUAL THE NUMBER OF PROTONS IN THE NUCLEUS.": YK=1:"THE ATOMIC NUMBER IS EQUAL TO THE NUMBER OF PROTONS IN THE NUCLEUS.": N"THE ATOMIC MASS IS EQUAL TO THE NUMBER OF NEUTRONS IN THE NUCLEUS.": }"IN A NEUTRAL ATOM THE POSITIVE CHARGES OF THE PROTONS MUST BE EXACTLY BALANCED BY THE NEGATIVECHARGES OF THE ELECTRONS." '"THE ATOMIC NUMBER IS THE NUMBER OF PROTONS IN THE NUCLEUS. THE ATOMIC MASS, HOWEVER, IS THE SUMOF THE PROTONS AND NEUTRONS IN THE NUCLEUS."    jJ=14:"WHICH OF THE FOLLOWING IS TRUE OF THE REFRACTIVE CONSTANT OF A TRANSPARENT SUBSTANCE?":S4 %`K=1:"THE VELOCITY OF LIGHT IS LESS IN THE SUBSTANCE THAN IN A PERFECT VACUUM.": *[K=1:"THE VELOCITY OF BLUE LIGHT IN GLASS IS LESS THAN THAT OF RED LIGHT.": /Q"THE ANGLE OF INCIDENCE IS ALWAYS EQUAL TO THE ANGLE OF REFRACTION.": >r"THE REFRACTIVE CONSTANT IS THE RATIO OF THE VELOCITY OF LIGHT IN A VACUUM TO THE VELOCITY IN THE SUBSTANCE." H'"SINCE BLUE LIGHT IS REFRACTED MORE THAN RED LIGHT IT FOLLOWS THAT THE VELOCITY OF BLUE LIGHT IN GLASS IS LESS THAN THAT OF RED LIGHT." o @~0,4:40(,0:0,-7:-40(,0:0,3:23677}\,23677}\+40(: %M=(*5+1) %&:Y=04:A$(3*Y+13*Y+3);:V+5*N$(Y+M)+20:N$(Y+M)=1Q$=A$(3*Y+1) %0Y:S3 %M=(*5+1) %sY=04:V+5*N$(M+Y)+20:A$(3*Y+1):N$(Y+M)=1Q$=A$(3*Y+1) %Y:S3 % M=1+3*(*2) %:TT=0:Y=02:B$(3*Y+1);". ";:K=0:V+5*M$(M+Y)+20:TT=TT+(Y+2)*(K>0) %Y:Q$=C$(TT-1):S3 %2,0;3;"A";9 ;"B";15;"C";21;"D";27;"E":,," 1,2,3";8;"1,2";14;"2,3";21;"1";27;"3":" ALL ONLY ONLY ONLY ONLY":" RIGHT RIGHT RIGHT RIGHT RIGHT" %r4,117u:238,0:4,149:238,0:4,165:238,0 %AO=4244480:O,165:0,-480:O &: &H&W$:RT=1q$=" ":9840p& &R9N(J)=N(J)+1:W$=Q$W$=(Q$+32 )9890& &\#1;"NO- ";Q$; &fA#1;" YOUR SCORE IS ";ANS;"/";Q'"PRESS 'ENTER'":0 &pW$Q$W$(Q$+32 )RT=0:6:6::V+502:"ENTER 'Y' TO REVIEW THE QUESTIONPRESS 'ENTER' TO GO ON.";I$:I$="Y"I$="y"RT=1:9870& &zQ=5029900& &*V=V+100d:Q=(V-900)/100d &A7:7::"QUESTION ";Q;"."::Q34"9700% &V &WANS=ANS+1:20,0;"CORRECT- ";Q$;".";:S(J)=S(J)+1:9830f& &b20,0;"PRESS 'ENTER' FOR TEST RESULTS.":0::10 ,0;"YOU HAVE:- "; &S=ANS:2;("FAILED-"S23);("UNGRADED"S8);("GRADE "S>8S<23);("E"S>8S16);("D"S>16S23);0;("PASSED-GRADE "S>23);("C"S>23S34");("B"S>34"S41));("A"S>41)) &M17,0;"PRESS 'ENTER' FOR AN ANALYSIS OFYOUR TEST RESULTS":P$: &J=021:J,0;1;("MECHANICS"J=0);0;("Units-Vectors-Density"J=1);("Particulate Matter"J=2);("Motion"J=3);("Static Systems"J=4);("Work-Energy-Power"J=5);("Pressure-Flotation"J=6); &ԍJ,0;1;("HEAT"J=7);0;("Nature-Units-Transfer"J=8);("Expansion"J=9 );("Heating Changes"J=10 ); &ޛJ,0;1;("WAVES-SOUND-LIGHT"J=11 );0;("Vibrations-Waves"J=12 );("Electromagnetic Waves"J=13 );("Optics"J=14); &J,0;1;("ELECTRICITY-MAGNETISM"J=15);0;("e.m.f.-Currents"J=16);("Magnetism"J=17);("Electromagnetics"J=18);("Domestic Electricity"J=19);("Electrostatic Charges"J=20);("The Atom"J=21); &DI=-1:J>0J7J11 J15I=S(J)/N(J) &J,22;2;("VERY BAD"I=0);("POOR"I>0I.3);("AVERAGE"I>.3I.6);("GOOD"I>.6I.85Y);1;5;("EXCELLENT"I>.85Y); 'J '0::S<45-6,0;"YOU HAVE NOT REACHED GRADE 'A' STANDARD."::"YOU ARE ADVISED TO REPEAT THIS TEST UNTIL YOU DO ATTAIN THAT GRADE.";16,0;"PRESS 'ENTER' TO TRY AGAIN.":5000:502 'q"YOU HAVE REACHED A GOOD STANDARDIN THIS TEST. START THE TAPE AND THEN PRESS 'ENTER' TO LOAD THE NEXT ONE." ' "" '"PHYSICS 7"5 @qHn%%H&%%v dj%/H a$0%kN 2514325143M123321AA. B. C. D. E. B 1. 2. 3. qq CD EB C ADO3 WQ IG9999PHYSICS 1 yy{O{ A0:0:0:0:5:5:0: 5,8;" P H Y S I C S "''15;"8";11 ,1;"THIS PROGRAM TAKES ABOUT THREE "''" MINUTES TO LOAD COMPLETELY" Y2:255,0:0,175:-255,0:0,-175 2*5:5:0,0:"" <"PHYSICS 1"1 ?PANEL 1 >>f@ 0:5:5::3,12 ;"PAPER I";''9 ;"REVISION TEST";10 ,1;"YOU ARE NOT PERMITTED THE USE OF AN ELECTRONIC CALCULATOR OR ANY AID TO HELP WITH NUMERICAL CALCULATIONS."''" USE SPARE PAPER FOR ROUGH WORK IF NECESSARY." 5:5:"" <"PANEL 1"1 ^PANEL 2 e9 5:5:0: 4,0;" HAVING WORKED ALL THE PREVIOUS SEVEN PROGRAMS AND TAKEN THE ADVICE GIVEN IN YOUR INTERESTS THE A.E.B. PAPER 1 PHYSICS EXAMINATION WILL NOW HOLD NO TERRORS FOR YOU." ''" PROVE IT TO YOURSELF WITH THIS LAST PROGRAM."''" BE CONFIDENT THAT YOUR ARE NOW WELL PREPARED FOR THE A.E.B. PAPER 1 EXAMINATION." 2!5:0,0:"" <"PANEL 2"1 sPHYSICS 8 j9'l5:0:5: g10 ,3;" S T O P T H E T A P E ";14,4;"PRESS ANY KEY TO GO ON." #.5,34":""20  10 q:''" TO ANSWER THE QUESTIONS:"''" 1. PRESS THE LETTER FOR THE ANSWER YOU CHOOSE."''" 2. PRESS 'ENTER'." #G'''"YOU CAN CHANGE YOUR ANSWER BY USING 'DELETE' IN THE USUAL WAY." (S#1;"NOW PRESS 'ENTER' TO GET STARTED":0:7:7:0: 2:N$="2514325143":M$="123321":A$="A. B. C. D. E. ":B$="1. 2. 3. "::S(22):N(22):Q=1:"QUESTION 1."::ANS=0 <S1=9500%:S2=9600%:S3=9800H&:S4=9650%:S5=9700%:RT=0:C$="D EB C A":V=1000:200:V ?:M=112 :D$:N=07:D:D$+N,D:N:M K"",32 ,80P,16,32 ,112p,0,0,0 J"",96`,16,32 ,16,96`,0,0,0 M"",16,16,16,124|,480,8,16,568 I"",480,72H,72H,480,0,0,0,0 Q"",0,96`,102f,102f,231,102f,102f,96` I"",0,0,32 ,80P,136,5,2,0 L"",0,2,124|,168,40(,40(,40(,0 M"",0,34",502,58:,255,58:,502,34" "P"",16,254,254,0,254,254,16,16 ,I"",0,480,8,8,20,34",65A,0 6L"",0,60<,66B,66B,66B,36$,231,0 @K"",0,16,16,16,84T,568,16,0  OJ=1:"WHICH OF THE FOLLOWING INVOLVES JOULES IN ITS MEASUREMENT?"::S1 "VOLTAGE.": "CURRENT.":  "ACCELERATION.": "PRESSURE.":  "FORCE.": ?"A VOLT IS THE WORK OF 1 JOULE PER COULOMB OF ELECTRICITY." K LJ=2:"THE SCENT OF A FLOWER OR THE BADSMELL OF ROTTEN EGGS IS QUICKLY ABLE TO PERMEATE AN ENCLOSED SPACE. THE PROCESS BY WHICH IT DOES THIS IS CALLED:":S1 e"DIFFUSION.": j"PERMEATION.": o"VAPOUR DRIFT.": t"DIFFRACTION.": y"AERATION.": ~"GASES MIX BY DIFFUSION OF THEIR PARTICLES INTO EACH OTHER. THIS EFFECT STRONGLY SUPPORTS THE THEORY THAT GASES ARE MADE UP OFLARGE NUMBERS OF VERY SMALL PARTICLES CALLES MOLECULES."  |J=3:"WHICH OF THE FOLLOWING GRAPHS OFVELOCITY AGAINST TIME REPRESENTSA SHORT CAR JOURNEY?":1210:1:s2 6,0;"^";10 ;"^";20;"^";15,5;"^";15;"^";7,0;"v";10 ;"v";20;"v";16,5;"v";15;"v" ]T$="Time":13 ,2;T$;12 ;T$;22;T$;21,8;T$;18;T$ 8,128:0,-568:72H,0:88X,128:0,-568:72H,0:168,128:0,-568:72H,0:480,64@:0,-568:72H,0:128,64@:0,-568:72H,0 8,72H:24,40(:480,0:88X,112p:24,-24:32 ,0:16,-16:168,72H:24,16:24,0:8,8:16,-24:480,8:16,480:480,0:0,-480:128,480:8,0:32 ,-40(:184,8:16,16:8,0 8,72H:24,40(:480,0:88X,112p:24,-24:32 ,0:16,-16:168,72H:24,16:24,0:8,8:16,-24:480,8:16,480:480,0:0,-480:128,480:8,0:32 ,-40(:184,8:16,16:8,0  6,24;: 6,14;: 6,4;: 16,10 ;: 16,20;: '"THE CAR STARTS FROM REST, THEN SPEEDS UP TO A FIXED VELOCITY, SPEEDS UP A LITTLE MORE AND THENSLOWS STEADILY TO A HALT.":1210  OJ=3:"WHICH OF THE PHYSICAL QUANTITIESLISTED IS MEASURED IN kgm/s?":S1 -"MOMENTUM.": 2"LATENT HEAT OF FUSION.": 7"KINETIC ENERGY.": <"VOLTAGE.": A"MOVING PRESSURE.": F:"MOMENTUM IS THE PRODUCT OF MASS TIMES VELOCITY, kgm/s." w xJ=5:"A STONE IS THROWN VERTICALLY UPWARDS TO A HEIGHT 'H' AS SHOWNIN THE DIAGRAM. AT WHICH POINT DOES THE KINETIC ENERGY IN THE STONE EQUAL THE POTENTIAL ENERGYIT GAINS AS IT RISES TO 'H'?" x60<,3:130,0:N=04:11 +2*N,15;"o":N:9 ,15;"H":S2 15,12 ;: 13 ,12 ;: 11 ,12 ;: 17,12 ;: 19,12 ;: '"THE KINETIC ENERGY OF THE STONE JUST AS IT IS THROWN WITH AN INITIAL VELOCITY 'u' IS mu ANDTHIS ENERGY IS TRANSFORMED INTO POTENTIAL ENERGY AT THE TOP OF THE FLIGHT, H. CONSEQUENTLY:"''" m*g*H = *m*u"'"i.e. 2*g*H = u" '"AT ANY POINT DURING THE FLIGHT THE KINETIC ENERGY IS *m*v, WHERE v IS THE STONE'S VELOCITY AT THAT POINT. THE POTENTIAL ENERGY WILL BE m*g*h, WHERE h ISTHE HEIGHT AT THAT POINT." "PRESS 'ENTER'.";I$: '"TO FIND THE HEIGHT AT WHICH THE KINETIC AND POTENTIAL ENERGIES ARE EQUAL, *m*v=m*g*h, ACCOUNTIS TAKEN OF THE RELATION BETWEENu AND v:"''" u- v = 2*g*h" l'"SINCE u= 2*g*H and v= 2*g*h THE RELATION BECOMES:"''" 2*g*H - 2*g*h = 2*g*h"''"i.e. h = *H"  ܛJ=6:"A 'U' TUBE HAS ARMS OF DIFFERENTDIAMETERS. WHEN IT IS HALF FULL OF A LIQUID OF TWICE THE DENSITYOF WATER THE LEVELS IN THE TUBEWILL BE:":S1  "EQUAL.":  "HIGHER IN THE NARROW SIDE.": "HIGHER IN THE WIDER SIDE.": 6"EQUAL ONLY WHEN THE TUBE IS COMPLETELY FULL.":  U"EQUAL ONLY IF THE 'U' TUBES IS FILLED TO EXACTLY HALF THE TOTAL CAPACITY.": i"THE LEVELS WILL BE EQUAL NO MATTER HOW MUCH LIQUID IS PUT INTO IT OR WHAT DENSITY IY MAY HAVE." ? @JJ=8:"WHICH OF THE FOLLOWING IS THE BEST CONDUCTOR OF HEAT?":S1 Y "COPPER.": ^"SULPHUR.": c"EBONITE.": h "WATER.": m "STONE.": rb"METALS GENERALLY ARE VERY GOOD CONDUCTORS OF HEAT, COPPER BEINGTHE BEST AT ROOM TEMPERATURE. "  1J=9 :"A SHAFT ROTATING IN A CLOSELY FITTED BEARING DEVELOPS HEAT DUETO FRICTION AND THIS CAUSES THE TEMPERATURE OF THE ASSEMBLY TO RISE. IF THE EXPANSIVITY OF THE SHAFT IS 0.00002/C AND THAT OF THE BEARING IS 0.00007/C WHICH OF THE FOLLOWING IS LIKELY TO BETHE RESULT AS THE SHAFT TURNS?":S1 /"THE BEARING WILL LOOSEN SLIGHTLY.": /"THE BEARING WILL TIGHTEN SLIGHTLY.":  "THE BEARING WILL SEIZE UP.": :"THE BEARING WILL WEAR OUT OF LIMITS VERY QUICKLY.": ?"THE SHAFT WILL WEAR AWAY MORE QUICKLY THAN THE BEARING.": x"AS THE BEARING EXPANDS MORE THANTHE SHAFT THE GAP BETWEEN THEM, THOUGH SMALL, WILL WIDEN WITH A RISE IN TEMPERATURE." a'"THE RESULT WILL BE TO REDUCE FRICTION AND SO REDUCE THE HEAT GENERATION FROM THE BEARING."  _J=10 :"WHAT IS THE RESULT OF LETTING COMPRESSED GAS ESCAPE THROUGH A SMALL HOLE?":S1 !."A RISE IN THE TEMPERATURE OF THE HOLE": &2"THE ESCAPING GAS EXPANDS AND GETS WARMER.": +0"THE ESCAPING GAS COOLS AND CONDENSES.": 0A"THE ESCAPING GAS COOLS AS IT EXPANDS AND COOLS THE HOLE.": 5"SOUND IS ALWAYS PRODUCED.": :"FRICTION BETWEEN THE ESCAPING GAS AND THE HOLE CAUSES A RISE IN TEMPERATURE OF BOTH. THE GAS,HOWEVER, COOLS ON EXPANSION BUT THE HOLE CAN GET VERY HOT." k lbJ=12 :"TWO FREQUENCIES, 440 AND 443 Hz,ARE SOUNDED TOGETHER. THE SOUND THAT IS HEARD:":S1 3"VARIES IN INTENSITY AT THE RATE OF 3 Hz.": "IS A PITCH OF 3*440 Hz.": "IS A FREQUENCY OF 3 Hz.": :"IS ONLY THE FIRST HARMONIC OF THE LOWER FREQUENCY.": "IS 440 Hz.": "AS THE TWO FREQUENCIES ARE VERY CLOSE A SOUND CLOSE TO THE MEAN PITCH WILL BE HEARD BUT WITH AN INTENSITY VARYING AT A RATE EQUAL TO THE DIFFERENCE IN THE PITCH OF THE TWO, i.e. 3 Hz."  lJ=14:"WHICH OF THE FOLLOWING CAN ONLY FORM A VIRTUAL IMAGE FROM A REALOBJECT PLACED BEFORE IT?":S1 "A PLANE MIRROR.": "A CONVERGING LENS.": "A PLANO-CONVEX LENS.": "A CONCAVE MIRROR": "A PARALLEL SLAB OF GLASS.": ="THE IMAGE FORMED BY A PLANE MIRROR IS ALWAYS VIRTUAL." 3 4gJ=16:RX=(*7+3):"WHAT CURRENT FLOWS IN Rx IN THE CIRCUIT SHOWN?":2110>:S1 >`140,513:100d,0:0,480:-100d,0:0,-480 @10 ,25;"Rx";8,19;"1.5V ";RX;" ";9 ,20;"";9 ,23;" ";14,19;"1.5V 1.5V";15,20;"";15,26;"" Bm184,99c:0,4:40(,0:0,-7:-40(,0:0,3 D6,0: M*AN=.01z# =*(150/RX):AN;" A.": R#.01z# =*(450/RX);" A.": W#.01z# =*(300,/RX);" A.": \-.01z# =*(100d*RX/4.5);" A.": a,0.01z# =*(RX*100d/3);" A.": fq"THE EFFECTIVE POTENTIAL APPLIED TO Rx IS 1.5V AND SO THE CURRENTIS:"''" 1.5/";Rx;" = ";AN;" A.":2110>  J=14:DS=(*502+40():"THE PIN, 'P', IN THE DIAGRAM COINCIDES WITH ITS OWN IMAGE"'DS;" cm FROM THE POLE OF THE"'"CONVERGING MIRROR 'M'. THE FOCAL"'"LENGTH OF THE MIRROR IS:":2210:S1 ?214,87W:13 ,0:0,-2:0,5:198,89Y:0,-4:0,2:13 ,0:11 ,23;"^";19,23;"":187,20:0,62>:194,20:40(,0,/3.5`:170,14:80P,0 11 ,29;"P";15,22;ds;"cm";19,31;"M":210,102f:6,0,/2:207,100d:6,14,/4:6,-14,/4 8,0;: ds/2;" cm":  ds;" cm": 2*ds;" cm": ds/4;" cm": ds/10 ;" m": ʖ"AT THE POINT 'P' THE IMAGE AND OBJECT DISTANCES ARE EQUAL AND TO TWICE THE FOCAL LENGTH OF THEMIRROR, i.e. THE FOCAL LENGTH IS";ds/2;" cm."  2210  xJ=17:"THE DIAGRAM SHOWS THE MAGNETIC FIELD AROUND A SUBSTANCE 'X'. THIS SUBSTANCE COULD BE:":2310 :S1 n13 ,18;"N";13 ,31;"S":n=016:192,60<+n:16,0:n N=-10 10 2:160,68D+2*N:20-2*(n<4),0:40(+4*(n<4),0,.2~L*((n<8)+(n<6)+(n<4))*(n0)*n:20-2*(n<4),0:n 7,0;: "SOFT IRON.":  "COPPER.": "SULPHUR.": $"MAGNETITE.": )"GRAPHITE.": ."AS THE FIELD LINES ARE DRAWN TO THE SUBSTANCE IT MUST HAVE HIGH MAGNETIC PERMEABILITY AND, FROM THE LIST, ONLY SOFT IRON SHOWS THAT PROPERTY." 8 2310 _ `^J=18:"THE CURRENT PASSING THROUGH THE COILS OF A TRANSFORMER HAS THE EFFECT OF:":S1 y,"TENDING TO FORCE THE WINDINGS APART.": ~2"PRODUCING HEAT IN THE CORE'S LAMINATIONS.": 7"CREATING A STEADY MAGNETIC FLUX IN THE CORE.": 6"PRODUCING EVEN MORE CURRENT IN THE WINDINGS.": O"TRANSFERRING POWER FROM THE PRIMARY TO THE SECONDARY WINDINGS.": n"THE MAGNETIC FIELD INDUCED IN THE COIL WINDINGS TENDS TO REPELTHE TURNS ONE FROM ANOTHER IN EACH COIL." '"THE CORE IS INFLUENCED ONLY BY THE MAGNETIC FIELD GENERATED BY THE COILS. THE TRANSFER OF POWERFROM THE PRIMARY WINDING TO THE SECONDARY IS ACHIEVED BY THE MAGNETIC LINK PROVIDED BY THE CORE."  J=19:"A HOUSEHOLDER WISHES TO USE A 100 W TABLE LAMP, A 300 W RADIO AND A 600 W MUSIC CENTRE ALL AT THE SAME TIME FROM A SINGLE 13 AOUTLET WITH A FUSED MULTI-WAY ADAPTOR. HOW MUCH IS THE TOTAL CURRENT LOAD CONNECTED AND WHAT FUSE RATING SHOULD BE USED IN THE ADAPTOR?":S1 5"4 A CURRENT LOAD. A 5 A FUSE SHOULD BE USED.": :"13 A CURRENT LOAD. A 13 A FUSE SHOULD BE USED.": 5"4 A CURRENT LOAD. A 13 A FUSE SHOULD BE USED.": 5"2 A CURRENT LOAD. A 2 A FUSE SHOULD BE USED.": :"2 A CURRENT LOAD. A 3 OR 5 A FUSE SHOULD BE USED.": D"THE TOTAL WATTAGE CONNECTED IS:"''" 100 + 300 + 600 = 1000 W." 4'"AT 240 V THIS COMES TO AROUND 1000/240 = 4 A." '"THE FUSE SHOULD BE RATED RATHER HIGHER THAN THE TOTAL CURRENT LOAD TO ALLOW FOR SWITCH-ON SURGES OF CURRENT. A 5 A FUSE WOULD BE APPROPRIATE." ' (lJ=20:"THE ELECTRON BEAM IN A CATHODE RAY TUBE IS EASILY DEFLECTED TO SCAN THE SCREEN BECAUSE:":S1 A5"THE ELECTRON HAS PRACTICALLY NO MASS AT ALL.": FC"THE ELECTRIC POTENTIALS THAT DEFLECT THE BEAM ARE LARGE. ": K:"THE SPEED OF THE ELECTRONS IN THE BEAM IS SO HIGH.": P/"THE ELECTRONS IN THE ARE IN A VACUUM.": U:"ELECTRONS ARE NEGATIVELY CHARGED IN THE BEAM.": Zy"IT IS THE ALMOST TOTAL ABSENCE OF MASS IN THE ELECTRON BEAM THAT ALLOWS SUCH HIGH WRITING SPEEDS ON THE SCREEN."  J=21:"THE WILSON CLOUD CHAMBER REVEALSTHE TRACKS MADE BY ALPHA, BETA AND GAMMA RAYS. IDENTIFY THE RAYS THAT MADE THE TRACKS SHOWN BELOW:.":2710 :S1 |M=02:N=06:65A+60<*M+N,78N:0,-6+3*(N<2N>4):N:M EN=-44:128,78N:*30*N,*502:N N=030:N=2*(N/2)68D,78N:(10 *)*(*),(502*+5),/(*4+2)*(*):(6*)*(*),*10 +5,-/4*(*) t188+(*)**10 ,78N+*40(:16**(*),16*,/(*4+4)*(*):N 13 ,0;: " BETA ALPHA GAMMA": " ALPHA BETA GAMMA": " GAMMA BETA ALPHA": " GAMMA ALPHA BETA": " BETA GAMMA ALPHA": '"GAMMA RAYS SHOW NO TRACKS BUT AS THEY OCCASIONALY STRIKE AIR MOLLECULES AND IONISE THEM THESEIONS GIVE SHORT TRACKS IN ALL DIRECTIONS ALONG THE PATH OF THERADIATION." n14,0;"BETA RAYS SHOW MUCH DEVIATION BUT ARE CLEARLY CONNECTED TO THESOURCE OF RADIOACTIVITY." b'"ALPHA RAYS GIVE STRAIGHT CLOUD TRACKS BECAUSE THEY ARE MASSIVE COMPARED WITH THE OTHER RAYS." 2710  MJ=12 :"A SHOT IS FIRED 200 m AWAY FROM A RUGGED CLIFF. THE ECHO:":S1 ="IS HEARD AS A CONFUSED SOUND THAT DIES AWAY QUICKLY.": B"AS A SHARP REPORT AND THEN HEARD A SECOND TIME FAINTLY.": :"IS HEARD AS A SHARP REPORT FOLLOWED BY SILENCE.": ;"IS A MUFFLED SOUND WHICH IS BRIEF BUT INDISTINCT.": 7"IS REFLECTED UPWARDS AND IS NOT HEARD AT ALL.": ""THE SHARP REPORT OF THE SHOT IS REFLECTED BY THE RUGGEDNESS OF THE CLIFF AT DIFFERENT DISTANCESFROM THE LISTENER. THE COMBINED EFFECT IS TO PRODUCE A CONFUSED SOUND THAT DIES AWAY QUICKLY." S TIJ=8:"WHEN ENERGY IS TRANSFORMED FROM ONE FORM INTO ANOTHER:":S1 m+"SOME ENERGY IS ALWAYS LOST AS HEAT.": r>"NO ENERGY CAN BE LOST BECAUSE ENERGY IS INDERTUCTABLE.": w;"THE PROCESS IS ALWAYS DONE WITH 100% EFFICIENCY.": |9"A MACHINE MUST BE INVOLVED IN THE TRANSFORMATION.": 2"THE VELOCITY RATIO MUST BE EXACTLY ONE.": "ENERGY CAN ONLY BE COMPLETELY TRANSFORMED INTO HEAT. IN ALL OTHER TRANSFORMATIONS SOME HEAT MUST BE PRODUCED WHICH MAKES THETRANSFORMATION LESS THAN 100% EFFICIENT."  mJ=10 :"WHICH POINT IN THE COOLING CURVESHOWN REPRESENTS A PERIOD OF SUPERCOOLING?":3010 :S2 18,0;"C";20,20;"Time" &20,120x:10 ,-16:10 ,-10 :20,-15:8,-4:6,4,/2:0,4:1,1:90Z,0:16,-10 :10 ,-6:24,-8:20,130:0,-110n:200,0  11 ,8;: 10 ,14;: 12 ,20;: 8,4;: 14,24;: "SUPERCOOLING TAKES PLACE AT THE POINT WHEN CRYSTALLISATION IS DUE TO START. ABSENCE OF NUCLEI TO INITIATE THE CRYSTAL GROWING PROCESS ALLOWS THE TEMPERATURE TO FALL BELOW CRYSTALLISATION POINT." '"AS SOON AS CRYSTALLISATION GETS GOING, HOWEVER, THE TEMPERATURE RISES QUICKLY TO THE POINT AT WHICH THE LIQUID CRYSTALLISES."  RJ=14:"TO WHICH COLOUR DOES THE HUMAN EYE SHOW GREATEST SENSITIVITY?":S1 56;"YELLOW.": :2;"RED.": ?4;"GREEN.": D1;"BLUE.": I3;"MAGENTA.": N"THE HUMAN EYE SHOWS GREATEST SENSITIVITY TO YELLOW LIGHT IN NORMAL LIGHTING BUT THIS CHANGESTO GREENISH-BLUE LIGHT UNDER BADLIGHTING CONDITIONS, e.g. UNDER MOONLIGHT."  J=16:"A DRY CELL IS FOUND TO BE ABLE TO DELIVER A CURRENT OF 0.150 A FOR THREE HOURS BEFORE ITS OUT- PUT VOLTAGE FELL TO 50% OF ITS INITIAL VALUE OF 1.8 V. WHAT IS THE CELL'S CAPACITY?":S1 "0.45 Ah.": "o.225 Ah.": "0.81 Wh.": "0.27 W.": "0.4 Wh.": "THE A CELL'S CAPACITY IS USUALLYEXPRESSED IN AMPERE-HOURS (Ah) AND IS THE PRODUCT OF CURRENT AND THE PERIOD IT HAS BEEN ABLE TO FLOW FOR." C'"IN THIS CASE THE CELL'S CAPACITYIS:"''" 0.15 * 3 = 0.45 Ah."  J=6:"A BICYCLE TYRE TAKES 300 STROKESOF A PUMP TO REACH AN ACCEPTABLEPRESSURE TO THE OWNER. WHICH OF THE FOLLOWING EFFECTS COULD BE OBSERVED DURING THE PUMPING?":S1 ""THE PUMP GOT HOT AT ONE END.": @"THE PUMPING EFFICIENCY GOT LESS AS THE PRESSURE ROSE.": T"AFTER 300 STROKES THE PUMP COULD NOT PUT ANY MORE AIR INTO THE TYRE.": R"THE TYRE COOLED SLIGHTLY AS THE AIR WAS EXPANDED INTO IT BY THE PUMP.": _"THE PRESSURE IN THE TYRE WAS 300 TIMES THAT OF THE OUTSIDE AIR WHEN PUMPING STOPPED.": i"THE HIGH PRESSURE END OF THE PUMP GETS HOT BECAUSE OF THE WORK DONE IN COMPRESSING THE AIR. " G Hj=3:"WHICH ""TICKER TAPE"" RECORD SHOWNBELOW CONCERNS A BODY HAVING A UNIFORM ACCELERATION?",,,"The record marked ""X"" shows a body moving at a steady speed":3410R :S2 RK=015:X5=20+2*K^2-4.693-V*(K>8)*(K-8)*(K-8):X5,28:1,0:X4=20+30*K-K^2:X4,36$:1,0:X3=20+20*K-(K-5)*(K-5)*(K>5):X3,44,:1,0:X=20+5*K+4*(K>8)*(K-9 )*(K-9 ):X,524:1,0:X1=20+K^2:X1,60<:1,0:X2=20+15*K:X2,68D:1,0:K Ti20,72H:230,0:20,40(:230,0:106j,16:-6,-3:6,-3:100d,13 :502,0:20,64@:230,0:20,568:230,0:20,480:230,0:20,32 :230,0:20,24:230,0 V;21,10 ;"Tape motion":13 ,1;"X": a14,1;: f15,1;: k16,1;: p17,1;: u18,1;: z"THE TAPE RECORD MARKED '";Q$;"' SHOWSTHE MARKS MADE BY THE VIBRATOR TO BE FURTHER AND FURTHER APART AS THE TAPE MOTION PROGRESES" {'"THIS STEADY INCREASE IN DISTANCEWITH TIME INDICATES THAT THE TAPE IS BEING PULLED UNDER A CONSTANT ACCELERATION."  J=4:QL=6*(*10 +9 ):AN=2*QL/3:"THE SPRING BALANCE AT 'Q' IS ATTACHED TO A RIGID ROD HELD BY SPRING BALANCES AT 'A' AND 'B' SO THAT AQ = 2*QB. IF 'Q' READS"'QL;" N WHAT ARE THE READINGS ON"'"'A' AND 'B'?":3510 :10 ,0;:S1 G9 ,23;"A";14,23;"Q";17,23;"B" YN=02:204-43+*(N=2),31+60<*(N=1)+20*(N=2):20,0:0,10 :-20,0:0,-10 :1;5,4:M=05:0,-2:1;2,2:M:N:193,36$:0,60<:1,0:0,-60< 154,546:-2,2:2,2:N=02:195-43+*(N=2),36$+60<*(N=1)+20*(N=2):9 ,0:1;9 ,3:0,-4:0,1:20+2*(N=2),0:N 9 ,4;"A= B=": QL-AN;" N ";AN;" N.": AN;" N ";QL-AN;" N.": AN;" N ";AN;" N.": +.1}L*(QL/.2~L);" N ";AN;" N.": @.1}L*(QL/.2~L);" N ";.1}L*(QL/.2~L);" N.": މ"AS THE SYSTEM IS IN EQUILIBRIUM THE MOMEMT OF 'B' ABOUT 'A' IS EQUAL TO THE MOMENT OF 'Q' ABOUTTHE SAME POINT:"'" B*3 = ";QL;"*2." *'"THIS GIVES B = 2*";QL;"/3 = ";AN;" N." s'"SIMILARLY THE MOMENT OF 'A' ABOUT 'B' IS EQUAL TO THE MOMENT OF 'Q' ABOUT 'B':"'" A*3 = ";QL;"*1" %'"THIS GIVES A = ";QL/3;" N."  J=8:"A MERCURY IN GLASS THERMOMETER WAS IMMERSED IN STRONG BRINE SOLUTION AT -8C AND THEN PLACED IN WATER AT 4C. WHAT READINGS ARE OBSERVED ON THE THERMOMETER?":S1 )B"THE TEMPERATURE RISE QUICKLY TO 0C AND GRADUALLY TO 4C.": .8"THE TEMPERATURE RISES QUICKLY TO JUST UNDER 4C.": 3="THE TEMPERATURE RISES SLOWLY TO 0C AND THEN TO 4C.": 8-"THE TEMPERATURE RISES SLOWLY TO 4C.": =6"THE TEMPERATURE RISES TO 0C AND STAYS THERE.": B"AS THE THERMOMETER BULB IS AT LESS THAN 0C TO START WITH, ICE FORMS ON THE BULB AS SOON ASIT IS PLACED IN WATER AT 4C PRODUCING A QUICK RISE TO 0C."''"AFTER THAT THE ICE ON THE BULB HAS TO MELT BEFORE A RISE TO 4CCAN TAKE PLACE." s tJ=16:"IN A 9 V d.c. MAINS POWER UNIT ALOAD OF 60 W CONNECTED TO THE OUTPUT PRODUCED A DEMAND OF 70 WOF INPUT POWER AT 240 V a.c. TO THE PRIMARY. THIS IMPLIES THAT THE INTERNAL RESISTANCE OF THE UNIT IS:":S1  "8.1 .":  "0.9 .":  "24 .":  "0.24 .":  "10 .": q"THE POWER LOST IN THE UNIT IS 10 W AND AT 9 V THIS IMPLIES AN INTERNAL RESISTANCE OF:"''" 9/10 = 8.1 ."  WJ=12 :"THE PITCHING AND TOSSING OF A SHIP IN MID OCEAN IS AN EXAMPLE OF:":S1 "A FORCED VIBRATION.": "A FREE VIBRATION.": "RESONANCE.": "A LONGITUDINAL WAVE.": "A STANDING WAVE.":  c"THE SHIP IS OBLIGED TO FOLLOW THE MOVEMENT OF THE SEA AND SO IT MOVES AS A FORCED VIBRATION." ; '"CERTAINLY THE TRANSMISSION OF PRESSURE IN A LIQUID IS EQUAL INALL DIRECTIONS IN GENERAL TERMS.IT IS WORTH BEARING IN MIND, HOWEVER, THAT THE DEPTH OF THE LIQUID ITSELF, BECAUSE OF ITS DENSITY, WILL CREATE AN INCREASEIN PRESSURE." [ \:J=8:"A CLINICAL THERMOMETER SHOULD NOT BE:":S4 u,K=1:"CLEANED WITH BOILING WATER.": z="USED FOR MEASURING THE BODY TEMPERATURE OF ANIMALS.": +K=1:"STERILIZED IN A AUTOCLAVE.": "PROVIDED THAT THE TEMPERATURE BEING MEASURED IS WITHIN THE THERMOMETER'S RANGE THERE IS NO REASON WHY CLINICAL THERMOMETERSSHOULD NOT BE USED FOR ANIMALS." '"CLINICAL THERMOMETERS SHOULD NOTBE HEATED OVER 50C SINCE THE GLASS WILL DISTORT PERMANENTLY AT HIGH TEMPERATURES AND MAKE THE INSTRUMENT INACCURATE."  %J=10 :"WATER IS ABLE TO:":S4 *K=1:"EXPAND WHEN BEING COOLED.": K=1:"BOIL AT 90C.": "FREEZE ON BEING HEATED.": D"BETWEEN 4C AND 0C WATER WILL EXPAND AS THE TEMPERATURE FALLS." L'"BY REDUCING THE PRESSURE WATER CAN BE MADE TO BOIL WELL BELOW 100C." # $iJ=9 :"AIR AT 20C AND 101.3 kPa HAS A DENSITY OF 1.28 kg/m. THE SAME DENSITY WILL APPLY AT:":S4 =#K=1:"129.7 kPa AT 102C": B#K=1:"224.7 kPa AT 377C": G"143.1 kPa AT 147C": V-"THE GENERAL EQUATION IS:"''" P*V = k*T" `'"WHERE P IS THE PRESSURE, V IS THE VOLUME AND T IS THE ABSOLUTETEMPERATURE OF THE GAS. k IS A CONSTANT WHICH DEPENDS ON THE MASS OF GAS BEING STUDIED." j'"ONLY THE TEMPERATURE AND THE PRESSURE CHANGE IN THIS CASE AS THE MASS AND VOLUME REMAIN FIXEDSO THAT THE DENSITY CAN STAY THESAME. SO THE ABOVE EQUATION BECOMES:"''" P/T = 101.3/(20+273)"''" = 0.3457 kPa/K." t'"FOR EACH TEMPERATURE QUOTED THE PRESSURE IS CALCULATED FROM:"'" P = 0.3457*T"''" T = 102 + 273; P = 129.6 kPa T = 377 + 273; P = 224.7 kPa T = 147 + 273; P = 145.2 kPa"  =J=12 :"A STANDING WAVE IS FORMED WHEN A SYSTEM:":S4 K=1:"RESONATES.": "IS FORCED TO VIBRATE.": 0"HAS A NATURAL FREQUENCY OF VIBRATION.": "RESONANCE REQUIRES THAT THE WAVES IN A SYSTEM SHOULD TRAVEL THROUGH EACH OTHER EXACTLY IN TIME SO THAT ANTINODES COINCIDE AND NODES MATCH EXACTLY - THE CONDITION OF A STANDING WAVE." z'"NEITHER A FORCED VIBRATION NOR THE NATURAL VIBRATION FREQUENCY OF A SYSTEM NEED NECESSARILY FORM A STANDING WAVE."  XJ=13 :"WHICH OF THESE STATEMENTS IS TRUE ABOUT LIGHT TRAVELLING IN AIR:":S4 AK=1:"RED LIGHT TRAVELLS FASTER THAN BLUE LIGHT.":  WK=1:"THE VELOCITY IN AIR IS ONLY SLIGHTLY LOWER THAN THAT IN SPACE.": Q"THE PRODUCT OF THE WAVELENGTH TIMES THE FREQUENCY IS A CONSTANT.": J"THE VELOCITY OF LIGHT IN AIR IS 0.9997 TIMES THE VELOCITY IN SPACE." ('"LIGHT WAVES OF HIGHER FREQUENCY TRAVEL MORE SLOWLY THAT WAVES OF LOWER FREQUENCY IN ANY OTHER MEDIUM THAN A PERFECT VACUUM." <'"THE PRODUCT OF WAVELENGTH TIMES FREQUENCY, FOR LIGHT IN AIR, IS NOT CONSTANT SINCE THE VELOCITY OF LIGHT CHANGES WITH ITS COLOURAND THEREFORE ITS FREQUENCY AND WAVELENGTH." O P.J=14:"A DIVERGING LENS CAN FORM:":S4 i<K=1:"A VIRTUAL IMAGE WHICH IS DIMINISHED.": n0"A REAL IMAGE WHICH IS MAGNIFIED.": s/"A VIRTUAL IMAGE THAT IS INVERTED.": "FOR ALL POSITIONS OF THE OBJECT THE IMAGE FORMED BY A DIVERGING LENS IS SMALLER, ERECT AND AS IT IS SITUATED BETWEEN THE LENS AND THE OBJECT, IT IS VIRTUAL."  KJ=16:"WHICH OF THE FOLLOWING IS THE EQUIVALENT OF ONE VOLT?":S4 NK=1:"A CURRENT OF 0.01 A PASSING THROUGH A RESISTANCE OF 100.": 7"100 J USED TO TRANSFER A CHARGE OF 0.01 C.": BK=1:"A RESISTANCE OF 40 WHICH DEVELOPS 0.025 W.": D"A VOLT IS THE WORK OF ONE JOULE USED IN TRANFERRING ONE COULOMB." E'"A VOLT WILL DRIVE ONE AMPERE THROUGH A RESISTANCE OF ONE OHM." Q'"THE POWER DEVELOPED BY A VOLTAGEAPPLIED TO A RESISTANCE IS:"''" W = V/R." ?'"PUTTING IN THE VALUES:"''" 40 = V*0.025"''"i.e. V = 1."  =J=17:"THE FORCE BETWEEN TWO MAGNETIC POLES IS:":S4 1-K=1:"GREATER THE CLOSER THEY GET.": 62"AN ATTRACTION IF THE POLES ARE SIMILAR.": ;\K=1:"VERY LARGE FOR POLES OF EQUAL STRENGTH BUT DIFFERENT POLARITIES.": J"THE FORCE BETWEEN TWO MAGNETIC POLES IS PROPORTIONAL TO THE PRODUCT OF THE POLE STRENGTHS AND INVERESLY PROPORTIONAL TO THE SQUARE OF THE DISTANCE THEY ARE APART." { |J=18:"TWO COILS, X AND Y, ARE WOUND ONA COMMON FORMER. COIL Y HAS TWICE THE NUMBER OF TURNS OF COIL X.WHICH STATEMENT IS TRUE OF THESETWO COILS?":S4 WK=1:"AN a.c. CURRENT ON ONE WILL INDUCE AN a.c. CURRENT IN THE OTHER.": IK=1:"AN a.c. VOLTAGE ON X PRODUCES TWICE THAT VOLTAGE ON Y.": VK=1:"AN a.c. CURRENT OF 1 A IN Y WILL CAUSE A CURRENT OF 2 A IN X.": "EVEN IF THE MAGNETIC LINK IS VERY POOR BETWEEN THE COILS ONLYALTERNATING VOLTAGES CAN BE INDUCED BY ONE OF THE COILS ON THE OTHER." O'"THE VOLTAGE RATIO WILL BE IN THERATIO OF THE NUMBER OF TURNS IN EACH COIL." '"THE CURRENT IN X WILL BE TWICE THE CURRENT IN Y ONLY IF THE MAGNETIC LINK IS 100% EFFICIENT.IN REALITY THIS CANNOT HAPPEN BUT IN THE ABSENCE OF ANY DATA TO THE CONTRARY, THE EFFICIENCY OF 100% IS ASSUMED."  RJ=20:"WHICH OF THESE STATEMENTS IS TRUE ABOUT STATIC ELECTRICITY?":S4 $K=1:"LIKE CHARGES REPEL.": GK=1:"THERE IS NO CHARGE INSIDE A HOLLOW CHARGED SPHERE.": K=1:"RUBBING A ROD OF POLYTHENE WITH A WOOLLEN DUSTER INDUCES A NEGATIVE CHARGE ON THE POLYTHENE AND A POSITIVE ONE ON THE DUSTER.": 6"SIMILAR ELECTROSTATIC CHARGES REPEL ONE ANOTHER." `'"A HOLLOW CONDUCTOR APPEARS TO HOLD ALL ITS CHARGE ON ITS OUTERSURFACE AND NONE INSIDE IT." &c'"POLYTHENE GENERATES A NEGATIVE CHARGE WHEN RUBBED WITH CLEAN WOOLLEN, SILK OR FUR MATERIAL." C D?J=10 :"THE MELTING POINT OF ICE CAN BE LOWERED BY:":S4 ])K=1:"APPLYING PRESSURE ON IT.": b#K=1:"ADDING SALT TO IT.": g"ADDING COLD SAND TO IT.": vx"THE MELTING POINT OF ICE WILL FALL UNDER INCREASED PRESSURE BECAUSE ICE INCREASES IN VOLUME ON FORMATION AT 0C." '"DISSOLVED SUBSTANCES IN GENERAL,SALT BEING ONLY ONE EXAMPLE, WILL LOWER THE FREEZING POINT OFICE. ONLY SUBSTANCES THAT CAN DISSOLVE IN WATER WILL DEPRESS THE FREEZING POINT, INSOLUBLE SUBSTANCES SUCH AS SAND WILL NOTAFFECT IT."  \J=21:"WHICH OF THE FOLLOWING IS A CHARACTERISTIC OF A RADIOACTIVE ISOTOPE?":S4 K=1:"ITS HALF-LIFE.": "ITS ATOMIC NUMBER.": "ITS MASS NUMBER.": "THE HALF-LIFE OF A RADIACTIVE ISOTOPE IS A UNIQUE PROPERTY OF IT. ATOMIC NUMBER IS SHARED BY OTHER ISOTOPES OF THE SAME ELEMENT AND ISOTOPES HAVING DIFFERENT ATOMIC NUMBERS MAY HAVE THE SAME MASS NUMBER."    IJ=14:"WHICH OF THE FOLLOWING IS TRUE OF A CONVERGING LENS?":S4 %K=1:"IF THE OBJECT IS PLACED AT TWICE THE FOCAL LENGTH FROM THE LENS THEN THE IMAGE IS THE SAME SIZE AS THE OBJECT.": *{K=1:"IF THE OBJECT DISTANCE IS LESS THAN THE FOCAL LENGTH THEN THE IMAGE IS VIRTUAL AND MAGNIFIED.": /jK=1:"IF THE OBJECT DISTANCE IS THE FOCAL LENGTH OF THE LENS THEN THE IMAGE IS AT INFINITY.": >T"THESE FACTS CAN BE ESTABLISHED FROM THE BASIC EQUATION:"''" 1/f = 1/v + 1/u." H\'"WHEN u, THE OBJECT DISTANCE, IS EQUAL TO 2*f THEN v, THE IMAGE DISTANCE IS EQUAL TO u." R'"IF u IS LESS THAN f, THE FOCAL LENGTH, THEN v BECOMES NEGATIVE AND THE IMAGE IS VIRTUAL. ALSO v IS NUMERICALLY LARGER THAN u AND SO THE IMAGE IS MAGNIFIED." \d'"FINALLY WHEN u IS EQUAL TO f THEN v BECOMES INFINITE AND THE IMAGE IS ALSO INFINITELY LARGE." o @v=1000:l(502) Jn=23755\65000:256*n+(n+1)=vl(v/100d-9 )=n:v=v+100d:v=6000p"Scan completed.": Tn ^ #W23627K\+256*23628L\,23627K\+256*23628L\-23755\: %M=(*5+1) %&:Y=04:A$(3*Y+13*Y+3);:V+5*N$(Y+M)+20:N$(Y+M)=1Q$=A$(3*Y+1) %0Y:S3 %M=(*5+1) %sY=04:V+5*N$(M+Y)+20:A$(3*Y+1):N$(Y+M)=1Q$=A$(3*Y+1) %Y:0:S3 % M=1+3*(*2) %:TT=0:Y=02:B$(3*Y+1);". ";:K=0:V+5*M$(M+Y)+20:TT=TT+(Y+2)*(K>0) %Y:Q$=C$(TT-1):S3 %2,0;3;"A";9 ;"B";15;"C";21;"D";27;"E":,," 1,2,3";8;"1,2";14;"2,3";21;"1";27;"3":" ALL ONLY ONLY ONLY ONLY":" RIGHT RIGHT RIGHT RIGHT RIGHT" %r4,117u:238,0:4,149:238,0:4,165:238,0 %AO=4244480:O,165:0,-480:O &: &H&W$:RT=1q$=" ":9840p& &R9N(J)=N(J)+1:W$=Q$W$=(Q$+32 )9890& &\#1;"NO- ";Q$; &fA#1;" YOUR SCORE IS ";ANS;"/";Q'"PRESS 'ENTER'":0 &pW$Q$W$(Q$+32 )RT=0:6:6::V+502:"ENTER 'Y' TO REVIEW THE QUESTIONPRESS 'ENTER' TO GO ON.";I$:I$="Y"I$="y"RT=1:9870& &zQ=5029900& &*V=V+100d:Q=(V-900)/100d &A7:7::"QUESTION ";Q;"."::Q34"9700% &V &WANS=ANS+1:20,0;"CORRECT- ";Q$;".";:S(J)=S(J)+1:9830f& &b20,0;"PRESS 'ENTER' FOR TEST RESULTS.":0::10 ,0;"YOU HAVE:- "; &S=ANS:2;("FAILED-"S23);("UNGRADED"S8);("GRADE "S>8S<23);("E"S>8S16);("D"S>16S23);0;("PASSED-GRADE "S>23);("C"S>23S34");("B"S>34"S41));("A"S>41)) &M17,0;"PRESS 'ENTER' FOR AN ANALYSIS OFYOUR TEST RESULTS":P$: &J=021:J,0;1;("MECHANICS"J=0);0;("Units-Vectors-Density"J=1);("Particulate Matter"J=2);("Motion"J=3);("Static Systems"J=4);("Work-Energy-Power"J=5);("Pressure-Flotation"J=6); &ԍJ,0;1;("HEAT"J=7);0;("Nature-Units-Transfer"J=8);("Expansion"J=9 );("Heating Changes"J=10 ); &ޛJ,0;1;("WAVES-SOUND-LIGHT"J=11 );0;("Vibrations-Waves"J=12 );("Electromagnetic Waves"J=13 );("Optics"J=14); &J,0;1;("ELECTRICITY-MAGNETISM"J=15);0;("e.m.f.-Currents"J=16);("Magnetism"J=17);("Electromagnetics"J=18);("Domestic Electricity"J=19);("Electrostatic Charges"J=20);("The Atom"J=21); &DI=-1:J>0J7J11 J15I=S(J)/N(J) &J,22;2;("VERY BAD"I=0);("POOR"I>0I.3);("AVERAGE"I>.3I.6);("GOOD"I>.6I.85Y);1;5;("EXCELLENT"I>.85Y); 'J '0::S<45-6,0;"YOU HAVE NOT REACHED GRADE 'A' STANDARD."::"YOU ARE ADVISED TO REPEAT THIS TEST UNTIL YOU DO ATTAIN THAT GRADE.";16,0;"PRESS 'ENTER' TO TRY AGAIN.":5000:502 'q"YOU HAVE REACHED A GOOD STANDARDIN THIS TEST. START THE TAPE AND THEN PRESS 'ENTER' TO LOAD THE NEXT ONE." ' "" '"PHYSICS 8"5 N 2514325143M123321AA. B. C. D. E. B 1. 2. 3. qqqHn%%H&%%CD EB C Av   dDj%TTimepJR p txuZ$0%QDWIf