Top 10k strings from Physics (1983)(Homestudy)(Side B).tzx
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60 "PRESS 'ENTER' FOR THE NEXT STAGE";I$ 42 "ENTER 'Y' TO REVIEW THE QUESTIONPRESS 'ENTER' TO GO ON. ";I$: 22 "PRESS 'ENTER' TO SEE THE MARKINGSCHEME. ";I$: 14 LOAD THE NEXT TEST.": 14 ;,,,,,"RUN THE TAPE, PRESS 'ENTER' 14 ;"_______________________" 14 ;"YOU ARE ALLOWED TO USE:" 14 ;"PRESS ANY KEY TO GO ON." 14 ;"PRESS 'ENTER'.": 14 ;"PRESS 'ENTER' AND TRY AGAIN": 14 ;"PAPER II REVISION TEST."; 14 ;"P H Y S I C S"'' 14 ;"GRADE "; 14 ;"FOR A SCORE OF ";M;"/40:": 14 ;"1. READ THROUGH THE QUESTION WITH GREAT CARE.": 14 ;" VERY GOOD INDEED."; 14 '" USE YOUR OWN DISCRETION WHEN MARKING YOUR WORK. HOWEVER, THE IMPORTANT POINTS THAT SHOULD BE MADE IN YOUR ANSWER HAVE BEEN FULLY COVERED IN THE MARKING SCHEME." 14 '" THE MARKING SCHEME PRESENTED WITH EACH QUESTION IS NO MORE THAN A GUIDE. ANSWERS WILL RARELY FIT IT EXACTLY." 14 '" ELECTRONIC CALCULATORS"'" LOGARITHM TABLES"'" SLIDE RULES" 14 "YOU WILL BE INVITED TO REPEAT THIS TEST UNTIL THE GRADE 'A' STANDARD IS REACHED." 14 "TO USE THIS TEST:" 14 "PANEL 2H" 14 "MARK YOUR WORK AS SOON AS YOU HAVE FINISHED EACH QUESTION. USETHE MARKING SCHEME PROVIDED." 14 "INCORRECT ASSESEMENT","PRESS 'ENTER'": 14 "5. COMPARE YOUR ANSWER WITH THE MARKING SCHEME PROVIDED AND BE CRITICAL OF YOUR WORK." 14 "4. WHEN YOU HAVE FINISHED YOUR WORK READ THE QUESTION ONCE MORE." 14 "3. ALLOW YOURSELF A PERIOD ABOUT AS LONG IN MINUTES AS THERE ARE MARKS FOR THE QUESTION." 14 "2. READ THE QUESTION AGAIN." 13 PANEL 2H O 13 ;"ADD UP ALL YOUR MARKS AND ENTER THE TOTAL NOW:" 13 "QUESTION 3." 13 "QUESTION 2." 12 ;"A WRITTEN ANSWER IS REQUIRED.": 12 "YOU WILL NEED WRITING PAPER, GRAPH PAPER, A RULER AND THE USEOF A CALCULATOR." 12 "U000000000000000000000000" 12 "T000000000000000000000000" 12 "S032080016032112000000000" 12 "R000000000000000000000000" 12 "P000002124168040040040000" 12 "O000060066066066036231000" 12 "N000000000000000000000000" 12 "M000000000000000000000000" 12 "K000000000000000000000000" 12 "J000000000000000000000000" 12 "I000000000000000000000000" 12 "H016016016124048008016056" 12 "F000000000000000000000000" 12 "E000000000000000000000000" 12 "C096016032016096000000000" 12 S T O P T H E T A P E 11 "Q000000000000000000000000" 11 "L000000000000000000000000" 11 "G016016016016084056016000" 11 "D048072072048000000000000" 11 COMPUTING 10 ));"(2 MARKS,-TOTAL 8)": 10 ));"(2 MARKS,-TOTAL 2)": 10 ));"(2 MARKS,-TOTAL 10)": 10 "A000000000000000000000000" 9 ;" ": 9 "QUESTION 1." 9 "B000000000000000000000000" 8 ));"(2 MARKS,-TOTAL 6)": 8 ));"(2 MARKS,-TOTAL 4)": 7 U000000000000000000000000I 7 PANEL 2 7 ));"(";S;" MARKS,- TOTAL ";T;")": 6 ;"PRESS 'ENTER' TO GET STARTED.": 6 "PRESS 'ENTER'";I$: 6 "PRESS 'ENTER' TO SEE THE MARKINGSCHEME. ";I$ 6 "PRESS 'ENTER' FOR THE NEXT STAGE";I$: 6 "PRESS 'ENTER' FOR THE MARKING SCHEME. ";I$: 5 "(10 MARKS)" 4 "PRESS 'ENTER'. ";I$: 4 "PRESS 'ENTER' TO START."; 4 "(14 MARKS)"; 3 ;"(4 MARKS)" 3 '"(12 MARKS)" 3 "QUESTION 1." 3 "PRESS 'ENTER'. ";I$ 3 "B000032040040239040040032" 2 ;"X X"; 2 ;"(2 MARKS)" 2 *WB+1.3754 2 ));"(2 MARKS,-TOTAL 12)": 2 '"(16 MARKS)" 2 '"(14 MARKS)" 2 '"(10 MARKS)" 2 "YOU WOULD BE EXPECTED TO:" 2 "WORKED EXAMPLE:": 2 "PRESS 'ENTER' TO GO ON. ";I$ 2 "PRESS 'ENTER' TO GET STARTED."; 2 "(14 MARKS)" 2 "(13 MARKS)" 2 " PRESS 'ENTER' TO GET STARTED."; 2 S T O P T H E T A P E 1 r AS THEVERTICAL AXIS." 1 r .63 .57 .50 .42 .34 .23" 1 kgOF WATER IN THE CONTAINER A RISEOF 6.8 K/min WAS OBSERVED AND A RISE OF 13.4 K/min WHEN 1 kg OF ACETONE WAS USED INSTEAD. "; 1 i AS THEHORIZONTAL AXIS AND 1 i .94 .87 .77 .64 .50 .34 1 e.m.f. OF THE CELL USING THE EQUATION:" 1 WITH BOILING POINTS OF 53 1 VOLUME OF SPACE PER 100 cm 1 VALUES OF 'R' AS THE HORIZONTAL AXIS. DRAW THE BEST STRAIGHT LINE THROUGH THE POINTS." 1 U000000000000000000000000a 1 U000000000000000000000000 1 THEN QUICKLY TRANSFERRED TO THE CALORIMETER WHERE THE RISE IN TEMPERATURE IT PRODUCES IS USED TO CALCULATE THE SPECIFIC THERMAL CAPACITY OF THE COPPER. (2 MARKS)" 1 THE HEAT CONDUCTED THROUGH THE INSULATION TO THE OUTSIDE (3 MARKS)." 1 PHYSICS 9 1 PHYSICS 17 1 PHYSICS 16 1 PHYSICS 11w& 1 PHYSICS 10 1 PHYSICS 1 v 1 PHYISCS 22 1 PHYISCS 218* 1 PHYISCS 20y( 1 PHYISCS 19 1 PHYISCS 18V. 1 PHYISCS 15 1 PHYISCS 14 1 PHYISCS 13z$ 1 PHYISCS 12y# 1 PANEL 2H M 1 PANEL 2 } 1 PANEL 2 w 1 PANEL 2 l 1 PANEL 2 \ 1 PANEL 2 Q 1 PANEL 2 . 1 PANEL 2 ! 1 Dm=(RAT*.1938 1 DIAMETER, d (m), IS:" 1 Created with Ramsoft MakeTZX 1 C096016032016096000000000b 1 C.","(1 MARK)" 1 C."'"WITH 100 g OF DIBENZYL IN A TESTTUBE, A STOPCLOCK, BOILING WATERIN A BEAKER AND A THERMOMETER, DESCRIBE HOW YOU WOULD PLOT A COOLING CURVE AND DEDUCE FROM ITTHE m.pt. OF DIBENZYL." 1 C."'"(16 MARKS)" 1 C. AT EACH TEMPERATURE THE RESISTANCE OF THE THERMISTOR IS MEASURED USING A CIRCUIT SUCH AS:" 1 C. (2 MARKS)" 1 C. (2 MARKS)" 1 C. (2 MARKS)" 1 C,"'"ARE FIXED TO THE"'"OTHER ENDS OF THE"'"RODS." 1 C, READING TO 0.1 1 C)."," (2 MARKS)" 1 C) FROM THAT OF THE MIXTURE (t 1 C"'"AND THE DENSITY OF WATER AT THATTEMPERATURE IS 998.2";U$;"." 1 C WITH"'"RUBBER BUNGS AS"'"SET OUT IN THE"'"DIAGRAM:" 1 C WITH ADDITIONAL HEATING. (1 MARK)" 1 C USING A STANDARD MERCURY IN GLASS THERMOMETER, A BEAKER WITH ICE, ANOTHER WITH BOILING WATER AND NECESSARY ELECTRICAL EQUIPMENT." 1 C RESPECTIVELY." 1 C OVER A PERIOD OF TIME. THE ICE REMAINING AFTER EACH HEATINGPERIOD WAS DRIED WITH A CLOTH AND WEIGHED. THE RESULTS WERE:" 1 C MARK WOULD REQUIRE THE USE OF PURE MELTING ICE. PLACING THE THERMOMETER INTHE ICE/WATER MIXTURE (2 MARKS) TO THE LEVEL OF THE MERCURY IN THE GLASS (1 MARK) WILL LOCATE THE POSITION OF THE THREAD FOR 0 1 C MARK SHOULD BE FIXED IN A SIMILAR MANNER, IMMERSING THE THERMOMETER IN PURE BOILING WATER (3 MARKS) AT A PRESSURE OF1 ATMOSPHERE (760 mm Hg). (1 MARK)" 1 C BY TYING IT WITH THE FINE WIRE AND LEAVING IT IN THE BOILING WATER FOR A FEW MINUTES.(2 MARKS)" 1 C AND KEPT AT 100 1 C AND AT EACH STAGE THE NEW STEADY READING OF THE POINTER RECORDED. (3 MATKS)" 1 C OVER THE RANGE 0 1 B000000000000000000000000 1 ATHERMOMETER READING TO 0.1 1 AND A SUITABLE BALANCE." 1 A SENSITIVE BALANCE CAPABLE OF WEIGHING THEM ONLY INDIVIDUALLY." 1 A QUANTITY IF ACCURATE1 1 A GUN WITH BLANK CARTRIGES." 1 ;"p*v = k = GRADIENT" 1 ;"e.m.f. = "; 1 ;"WILL SHOW THAT THE"; 1 ;"WHERE: d = THE DIAMETER (m)"'" M = THE MASS (kg)"'" D = THE DENSITY (kg/m 1 ;"WAVELENGTH OF THE SOUND"; 1 ;"WAVE.(2 MARKS)" 1 ;"USING THE CIRCUIT SHOWN ABOVE, ASTUDENT OBTAINED THE FOLLOWING VALUES OF THE CURRENT FOR THE SET VALUES OF THE RESISTANCE 'R'" 1 ;"THESE VALUES FOR k SCORE MARKS:" 1 ;"THEIR POSITIONS"; 1 ;"THE VELOCITY,v 1 ;"THE TURNING MOMENTS ARE:" 1 ;"THE TUBE IS CLAMPED TO THE BASE AT 'A'. THE OTHER END RESTS ON AROLLER ATTACHED TO A POINTER ANDSCALE SO AS TO PROVIDE A 10-FOLDMAGNIFICATION OF CHANGES IN THE LENGTH 'l'." 1 ;"THE INITIAL VALUE"'"OF R SHOULD BE"'"1 1 ;"THE COMBINED VALUE IS 2.5 1 ;"SUCTION IS APPLIED"'"AT 'S' AND THE TWO"'"LIQUIDS ARE DRAWN UP"'"THEIR RESPECTIVE"'"TUBES. (2 MARKS)" 1 ;"SUCCESSIVE DIFFERENCES"; 1 ;"SLOPE=.94/7"; 1 ;"SLOPE = 3/5" 1 ;"SLOPE = 24.3/1000" 1 ;"SLOPE = 2.5/50"; 1 ;"SLOPE = 2.5/0.5" 1 ;"SLOPE = 11.5/10"; 1 ;"SLOPE = 10/5" 1 ;"SLOPE = 10.7/50" 1 ;"SLOPE = .67/1.00" 1 ;"PRESS 'ENTER' FOR THE NEXT STAGE" 1 ;"PIN AND THE OBJECT"; 1 ;"PARALLAX IS ZERO."; 1 ;"PAPER II REVISION" 1 ;"MOVING THE EYE"; 1 ;"MOVE TOGETHER WHEN"; 1 ;"MELTING TIME, t, = 556 s" 1 ;"MARKS",,, 1 ;"MARKS FOR THE RESISTANCE VALUE ARE AS FOLLOWS:" 1 ;"IN RESONANT LEVEL (h)"; 1 ;"H O M E S T U D Y" 1 ;"GRADIENT = 1.02/5" 1 ;"G.C.E. 'O' LEVEL PHYSICS" 1 ;"FROM THE WAVE EQUATION:"; 1 ;"FROM SIDE TO SIDE"; 1 ;"FOCAL LENGTH = 1/.95 m" 1 ;"ELASTIC LIMIT"; 1 ;"CORRESPOND TO HALF A"; 1 ;"COINCIDE, i.e."; 1 ;"CALCULATE THE VELOCITY RATIO FORTHE SYSTEM ASSUMING THE EFFORT IS APPLIED AT F." 1 ;"ADD UP YOUR MARKS AND ENTER THE TOTAL HERE:" 1 ;"ACTIVITY"; 1 ;"A.E.B. SYLLABUS 052." 1 ;"= 7.2 N" 1 ;"= 2 min"; 1 ;"= 1.15 cm/N" 1 ;"= 0.9 kpps" 1 ;"= 0.134": 1 ;"7.65 V 14 MARKS"; 1 ;"7.55 V 15 MARKS"; 1 ;"7.45 V 16 MARKS"; 1 ;"7.35 V 15 MARKS"; 1 ;"7.25 V 14 MARKS"; 1 ;"7.15 V 13 MARKS"; 1 ;"7,75 V 13 MARKS" 1 ;"4*l T" 1 ;"1000 N"; 1 ;"(5 MARKS)" 1 ;"(3 MARKS)" 1 ;"(2 MARKS: TOTAL 8)" 1 ;"(2 MARKS: TOTAL 6)" 1 ;"(2 MARKS: TOTAL 4)" 1 ;"(2 MARKS: TOTAL 2)" 1 ;"(2 MARKS: TOTAL 10)" 1 ;"(2 MARKS,-TOTAL 8)": 1 ;"(2 MARKS,-TOTAL 6)": 1 ;"(2 MARKS,-TOTAL 4)": 1 ;"(2 MARKS,-TOTAL 2)": 1 ;"(2 MARKS,-TOTAL 12)": 1 ;"(2 MARKS,-TOTAL 10)": 1 ;"(10 MARKS)" 1 ;" YOU SHOULD FIND THIS SECOND PROGRAM MUCH EASIER TO WORK NOW YOU KNOW WHAT TO EXPECT." 1 ;" YOU PROBABLY REALISE BY NOW HOW IMPORTANT IT IS TO MAKE A WRITTEN REPLY TO THE QUESTIONS BEFORE CONSULTING THE MARKING SCHEME."''" TOO MUCH EMPHASIS CANNOT BE PLACED ON THIS."''" IT IS VITALLY IMPORTANT FOR A SUCCESSFUL REVISION." 1 ;" YOU MAY THINK THAT YOU ARE BY NOW SUFFICIENTLY WELL PREPARED TO TAKE A PAPER 2 EXAMINATION."''" THIS IS NOT SO!" 1 ;" THE NEXT THREE PROGRAMS SHOULD ENABLE YOU TO GAIN A GRADE C STANDARD WITH CONFIDENCE." 1 ;" THE BENEFIT FROM THIS PROGRAM WILL BE LOST TO YOU UNLESS YOU HAVE THE PATIENCE TO MAKE A WRITTEN REPLY, HOWEVER POOR AND THEN COMPARE IT WITH THE MARKING SCHEME." 1 ;" PAY PARTICULAR ATTENTION TO GRAPH DRAWING IN ALL THE NEXT PROGRAMS. NOTICE ESPECIALLY HOW IMPORTANT IT IS TO MARK THE AXIS CORRECTLY. THIS DOES NEED A LOT OF THOUGHT." 1 ;" IN THIS PROGRAM CONCENTRATE ON DRAWING A GOOD GRAPH MARKING EACH AXIS CLEARLY AND STATING WHAT EACH ONE IS USED FOR." 1 ;" IN THIS FINAL PROGRAM YOU CAN EXPECT TO GET AN EXCELLENT GRADE AT THE FIRST ATTEMPT." 1 ;" IN THE REMAINING PROGRAMS MAKE A POINT OF READING YOUR ANSWER AND THEN READ THE QUESTION OVER AGAIN." 1 ;" AT THIS STAGE YOU SHOULD FIND ANSWERING THE QUESTIONS IN THE PROGRAMS A MUCH EASIER TASK. THE GREATER MASTERY YOU HAVE OF THIS TYPE OF QUESTION THE VERY MUCH EASIER THEY APPEAR TO BECOME!" 1 ;" AT THIS STAGE YOU SHOULD BE GETTING CONSISTENTLY GOOD GRADES IN THESE PROGRAMS AT THE FIRST TRY."''" IT IS WORTH LOOKING BACK TO YOUR FIRST EFFORTS TO NOTICE THE IMPROVEMENT." 1 ;" APPROACH THIS PROGRAM WITH THE FULL INTENTION OF GETTING ALL THE QUESTIONS RIGHT." 1 ;" ALL THESE REVISION PROGRAMS ARE CLOSELY BASED ON A.E.B. PAPERS SET IN THE PAST TWO YEARS. YOU CAN CONFIDENTLY EXPECT A SIMILAR PATTERN OF QUESTIONS TO BE SET FOR YOUR EXAMINATION." 1 ;" ALL THE QUESTIONS SET IN THESE PROGRAMS HAVE BEEN DRAWN FROM ACTUAL LABORATORY EXPERIMENTS AND IT WOULD BE OF GREAT VALUE TO YOU TO CARRY THEM OUT FOR YOURSELF." 1 ;" v = f * (2*h)."; 1 ;" v = f * 1 9.90 2"'" 10.00 1 9.60 1"'" 9.70 1 84.0 1" 1 83.4 2"'" 83.5 1 83.0 3"'" 83.1 1 82.6 4"'" 82.7 1 81.7 3"'" 81.8 1 81.3 2"'" 81.4 1 80.9 1"'" 81.0 1 350 1" 1 345 2"'" 346 1 340 3"'" 341 1 336 4"'" 337 1 329 3"'" 330 1 325 2"'" 326 1 320 1"'" 321 1 10.5 2"'" 10.6 1 10.30 1" 1 10.2 3"'" 10.3 1 1.53 1"'" 1.52 1 1.48 2"'" 1.47 1 1.45 1" 1 1.20 1" 1 1.12 1"'" 1.11 1 1.10 2"'" 1.09 1 1.09 2"'" 1.10 1 1.07 3"'" 1.06 1 1.04 4"'" 1.03 1 1.02 3"'" 1.01 1 000000000112136136136112" 1 000000000028226226226156" 1 0.99 2"'" 0.98 1 0.99 1"'" 1.00 1 0.95 1" 1 0.054 1" 1 0.051 2"'" 0.052 1 0.048 1"'" 0.049 1 ,MUST BE QUOTED IN THE ANSWER TO SCORE ANY MARKS AT ALL." 1 , SOME PAPER TO DRY WITH, A BEAKER AND A SUPPLY OF WATER." 1 , OF RESISTANCE MUST BE STATED FOR THE ANSWER TO EARN ANY MARKS." 1 , LENGTH OF WIRE, l (m), TENSION, T (N), WIRE DENSITY,D (kg/m 1 *WB;"+1.3754=";.002245 1 *N;"0.";N+1 1 *D"'" SLOPE ="'," 4*l T" 1 );" (2 MARKS)"; 1 ): 2.53 2.20 2.02 1.70 1.55 1/P : 1.00 0.90 0.80 0.70 0.60" 1 ));"(4 MARKS,-TOTAL 9)": 1 ));"(4 MARKS,-TOTAL 6)": 1 ));"(4 MARKS,-TOTAL 4)": 1 ));"(3 MARKS,-TOTAL 5)": 1 ));"(3 MARKS,-TOTAL 12)": 1 ));"(2 MARKS,-TOTAL 14)": 1 ));"(2 MARKS,-TOTAL )": 1 ));"(";S;" MARKS,- TOTAL ";T;")";: 1 ) AS THE HORIZONTAL AXIS AND 1/I AS THE VERTICAL AXIS." 1 ) = 1/(SLOPE)" 1 ) MARKS"''" 8.6 1 ) = 1 2 3 4 5": 1 ) 70 60 50 40 30 20 r ( 1 ) 6/(R+0.5)" 1 ) 39 35 30 25 20 13 1 ) 1.5 2.0 2.5 3.0 3.5 4.0I (A) 2.1 1.6 1.4 1.3 1.1 1.01/I .47 .62 .70 .77 .93 1.0" 1 ) .20 .41 .62 .82 1.02" 1 ) R+0.5( 1 ) MARKS"''" 0.75 1 ) MARKS"''" 9.40 1 (2 MARKS)."; 1 '''''''"IT IS ASSUMED THAT THERE IS NO HEAT LOST, SO THE HEAT GIVEN BY THE COPPER BLOCK MUST EQUAL THE HEAT THE CALORIMETER RECEIVED:" 1 '''''"THE HEAT GIVEN BY THE COPPER BLOCK TO THE CALORIMETER IS:"''" (100-t2)*Mc*c" 1 '''"THIS PROCESS IS REPEATED UNTIL THE CYLINDER IS FULL. THE WHOLEPROCEDURE IS REPEATED AT LEAST FIVE TIMES STARTING WITH AN EMPTY CYLINDER.(2 MARKS)" 1 '''"BOTH ANSWERS MUST QUOTE CORRECT UNITS TO SCORE ANY MARKS AT ALL" 1 ''"TRAPPED AIR IN THE SAND WILL GIVE A LOW VALUE FOR THE DENSITYAND IT SHOULD BE REMOVED BY A BRISK ROTATION OF THE CYLINDER HELD BETWEEN THE HANDS."'"(2 MARKS)" 1 ''"THE FOLLOWING VALUES FOR THE LENGTH SCORE THE MARKS SHOWN:" 1 ''"THE CONTENTS OF THE CALORIMETER SHOULD BE ALLOWED TO REACH A STEADY TEMPERATURE WHICH IS THENRECORDED AS t1. (1 MARK)" 1 ''"(12 MARKS)" 1 ''" THIS IS ABSOLUTELY IN YOUR OWN INTERESTS." 1 ''" SHOULD YOUR APPROACH BE VERY DIFFERENT TO THAT GIVEN IN THE MARKING SCHEME REMEMBER THAT THE ANSWERS GIVEN HERE WILL ALWAYS SCORE HIGH MARKS AND ARE A GOOD STANDARD TO ADOPT." 1 ''" REMEMBER THAT THE ABILITY TO DRAW VERY GOOD GRAPHS IS A MUST FOR THIS EXAMINATION." 1 ''" PAPER 2 EXAMINATION QUESTIONS ARE VERY VARIED AND AIMED AT TESTING YOUR ABILITY TO APPLY A GRAPH OR A FORMULA TO A SET OF EXPERIMENTAL RESULTS AND TO DESCRIBE EXPERIMENTAL METHODS. THIS ALWAYS NEEDS PRACTICE." 1 ''" NEVERTHELESS YOU SHOULD ALWAYS BE PREPARED FOR THE UNEXPECTED SUBJECT TO APPEAR. TAKE EXTRA CARE WITH QUESTIONS THAT SEEM EASY." 1 ''" MOST CANDIDATES ARE WEAK IN DRAWING GOOD GRAPHS. THIS HAS BEEN GIVEN SPECIAL EMPHASIS THROUGHOUT THESE PROGRAMS." 1 ''" HAVING COMPLETED ALL THESE REVISION PROGRAMS YOU SHOULD STILL EXPECT TO BE PRESENTED WITH AN UNUSUAL KIND OF QUESTION IN YOUR EXAMINATION."''" BE PREPARED FOR THIS BUT ALSO BE SURE THAT YOU ARE NOW WELL EQUIPPED TO DEAL WITH THESE QUESTIONS WHATEVER THEY MAY BE ABOUT." 1 ''" HAVE PATIENCE WITH YOURSELF. MAKE A WRITTEN ANSWER BEFORE YOU CONSULT THE MARKING SCHEME FOR EACH QUESTION. WHEN YOU WORK IN THAT WAY YOU MAKE BY FAR THE FASTEST PROGRESS." 1 ''" DO THIS BEFORE CONSULTING THE MARKING SCHEME." 1 ''" BEAR IN MIND THAT THIS PART OF THE A.E.B. EXAMINATION CARRIES 20% OF THE TOTAL MARKS FOR THE WHOLE EXAMINATION AND YOU NEED EACH AND EVERY ONE OF THEM." 1 ''" GRADIENT MARK"'" 0.046 1 '"u (m) 5.0 1.4 1.1 1.0 v (m) 1.0 2.0 4.0 5.0 1/u .20 .70 .95 1.0 1/v 1.0 .50 .25 .20" 1 '"t (ms) 452 639 782 904 1010 h (m) 1 2 3 4 5 t 1 '"kpps 3 2.1 1.1 .75 .38TIME(min) 0 1 3 4 5" 1 '"YOU ARE PROVIDED WITH TWO METAL RODS, ONE GOLD AND THE OTHER COPPER, FIXED TO A WATER BATH AT100 1 '"YOU ARE PROVIDED WITH OVER 10000MARBLES OF NEARY EQUAL SIZE 1 '"YOU ARE PROVIDED WITH A STONE OFIRREGULAR SHAPE, A BEAKER LARGE ENOUGH TO HOLD THE STONE INSIDE IT, LIQUID OF DENSITY 1324 kg/m 1 '"YOU ARE GIVEN AN UNCALIBRATED MERCURY IN GLASS THERMOMETER INTENDED FOR THE TEMPERATURE RANGE -10 1 '"WITH kpps AS THE VERTICAL AXIS AND TIME AS THE HORIZONTAL AXIS,PLOT THE DATA GIVEN AND DRAW A SMOOTH GRAPH THROUGH THE POINTS." 1 '"WITH TIME AS THE HORIZONTAL AXISADN THE MASS OF ICE REMAINING ASTHE VERTICAL AXIS, PLOT THE DATAGIVEN ABOVE." 1 '"WITH THE LOAD AS THE HORIZONTAL AXIS AND EFFORT AS THE VERTICAL AXIS PLOT THE DATA GIVEN ABOVE." 1 '"WITH LENGTH AS THE HORIZONTAL AXIS AND PERIOD AS THE VERTICAL AXIS PLOT THE ABOVE DATA. DRAW THE BEST STRAIGHT LINE THROUGH THE POINTS.": 1 '"WHERE W=HEATING COIL WATTAGE T=HEATING PERIOD (SECONDS)(2 MARKS)" 1 '"WHERE THE CURRENT, I, FLOWING THROUGH THE THERMISTOR, T, IS MEASURED BY THE AMMETER, A. (2 MARKS)" 1 '"WHEN ALL IS READY THE WATER BATHIS QUICKLY FILLED WITH WATER AT 100 1 '"WHEN ALL IS READY THE BLOCK IS LIFTED FROM THE BOILING WATER, BOUNCED ON THE BENCH TO SHAKE OFF ADHEREING WATER AND PLUNGED INTO THE CALORIMETER. (2 MARKS)" 1 '"VARIOUS LENGTHS OF A PENDULUM GAVE THE FOLLOWING TIMES FOR ONECOMPLETE OSCILLATION (A PERIOD):" 1 '"VALUES FOR THE LATENT HEAT OF FUSION OF ICE SCORE AS FOLLOWS:" 1 '"VALUES FOR THE FOCAL LENGTH OF THE LENS SCORE AS FOLLOWS:" 1 '"VALUES FOR 'g' SCORE AS FOLLOWS:" 1 '"USING THE EQUIPMENT"'"SHOWN STATE HOW YOU"'"WOULD MEASURE THE"'"DENSITY OF THE"'"LIQUID IN 'X'"'"GIVEN THE DENSITY"'"OF THE LIQUID"'"IN 'H'." 1 '"USING AN ACCURATE MILLISECOND TIMER THE TIME, t (ms), OF FREE FALL OF A SMALL LEAD BALL WAS RECORDED FOR VARIOUS HEIGHTS OF FALL, h (m):" 1 '"TO WORK OUT THE AVERAGE DIAMETERTHE MEAN MASS, M, IS DIVIDED BY THE DENSITY AND THE RESULT IS DIVIDED BY THE VALUE OF 1 '"TO COMPENSATE FOR THIS LOSS OF HEAT, THE LIQUID, IN THE PLASTICBOTTLE, IS COOLED WELL BELOW THEAMBIENT TEMPERTURE USING COLD WATER. (2 MARKS)" 1 '"THIS METHOD HAS THE ADVANTAGE OFENABLING REPEATED MEASUREMENTS TO BE MADE QUICKLY AND EASILY. FROM A NUMBER OF MEASURED RATIOSOF THE TWO HEIGHTS (5 AT LEAST) AN ACCURATE ESTIMATE OF THE UNKNOWN DENSITY CAN BE MADE. (3 MARKS)" 1 '"THIS GIVES RISE TO TWO SERIOUS LIMITATIONS OF THE METHOD:" 1 '"THIS EQUATION GIVES:" 1 '"THIS ENSURES THAT ABOUT AS MUCH HEAT IS TAKEN IN FROM THE AIR DURING THE 'COLD' PERIOD AS IS LOST DURING THE 'WARM' PERIOD. (2 MARKS)" 1 '"THERMAL EXPERIMENTS ARE SUBJECT TO SERIOUS HEAT LOSSES TO THE SURROUNDING AIR DURING THE TIME THE TEMPERATURE IS RISING. (2 MARKS)" 1 '"THE e.m.f. IS APPLIED TO THE AMMETER WITH A RESISTANCE, R, INSERIES AS SHOWN IN THE DIAGRAM: (3 MARKS)" 1 '"THE WATER IN THE CALORIMETER IS STIRRED AND THE TEMPERATURE READFREQUENTLY SO AS TO FIND THE MAXIMUM TEMPERATURE RISE, t2, PRODUCED BY THE COPPER BLOCK. (3 MARKS)" 1 '"THE VOLUME OF THE PLASTICINE IS THEN MEASURED BY FILLING THE CYLINDER TO A SUITABLE LEVEL WITH WATER AND NOTING THE RISE IN VOLUME WHEN THE PLASTICINE ISIMMERSED IN IT. (3 MARKS)" 1 '"THE VELOCITY OF SOUND CAN BE WORKED OUT FROM:" 1 '"THE VALUE OF THE MEAN DIAMETER SHOULD NOT BE QUOTED TO TOO MANYDECIMAL PLACES; IT IS UNLIKELY THAT AN ANSWER BETTER THAN THREESIGNIFICANT FIGURES COULD BE OBTAINED."'"(2 MARKS)" 1 '"THE UNITS OF ACCELERATION, m/s 1 '"THE THERMISTOR AND THERMOMETER, WITH THE CERAMIC BEAD CLOSE TO THE MERCURY BULB, ARE BOTH PUT IN WATER AT VARIOUS TEMPERATURESRANGING FROM 0 1 '"THE TEST TUBE WITH DIBENZYL IS PLACED IN THE BOILING WATER TO MELT IT. (2 MARKS)" 1 '"THE TEMPERATURE OF THE DIBENZYL SHOULD BE TAKEN REGULARLY AND RECORDED AGAINST TIME. 2(MARKS)" 1 '"THE SPECIFIC THERMAL CAPACITY OFWATER IS 4180 J/kgK." 1 '"THE SPECIFIC THERMAL CAPACITY OFTHE LIQUID IS GIVEN BY:" 1 '"THE SLOPE OF THE LINE SHOULD BE MEASURED AND FOUND TO FIT THE EQUATION:" 1 '"THE RODS SHOULD BE OF EQUAL SIZEAND THE EXPOSED LENGTHS SHOULD ALSO BE THE SAME. THEY SHOULD BE AT THE SAME TEMPERATURE AT THE START. (2 MARKS)" 1 '"THE RESULTS SHOWN IN THE TABLE WERE OBTAINED FROM A STUDY OF THE INTERNAL RESISTANCE OF A NEWCELL. THE FOLLOWING CIRCUIT WASUSED:" 1 '"THE RESISTANCE IS FOUND FROM THERATIO:"''" R = 1.5/I"'"(2 MARKS)" 1 '"THE REQUIRED EXPANSIVITY VALUE IS OBTAINED BY DIVIDING THE RATEBY THE ORIGINAL LENGTH AT 0 1 '"THE REFRACTIVE CONSTANT"'"OF ACRYLIC PLASTIC"'"WAS MEASURED USING A"'"SEMI-CIRCULAR SLAB"'"OF THE MATERIAL. THE"'"REFRACTED RAY ANGLE"'"WAS RECORDED FOR"'"VARIOUS ANGLES OF"'"THE INCIDENT RAY:" 1 '"THE POSITION OF THE TOP OF THE MERCURY THREAD SHOULD BE MARKED USING AN INDELIBLE MARKER, CARE BEING TAKEN TO AVOID PARALLAX ERRORS. (1 MARK)" 1 '"THE POINTER SHOULD BE SET TO THEMINIMUM READING AT THIS POINT. THEN THE TEMPERATURE SHOULD BE RAISED BY FIXED INTERVALS, SAY 10 1 '"THE PLASTICINE IS ATTACHED TO THE WOOD AND BOTH ARE IMMERSED IN THE WATER IN THE CYLINDER. ONCE AGAIN THE RISE IN VOLUME ISNOTED. (3 MARKS)" 1 '"THE PITCH CAN BE MEASURED USING A VARIABLE PITCH GENERATOR AND ADJUSTING IT UNTIL NO 'BEATS' CAN BE HEARD WITH THE SONOMETER.(2 MARKS)" 1 '"THE MEAN MASS, M, SHOULD BE WORKED OUT FIRST AND THIS FIGUREUSED IN THE CALCULATION OF THE DIAMETER. (2 MARKS)" 1 '"THE IMAGE FORMED AT A DISTANCE 'u' FROM A LENS WAS MEASURED FOR VARIOUS DISTANCES 'v' OF THEOBJECT. THE RESULTS ARE SET OUT IN THE TABLE BELOW:" 1 '"THE EQUATION RELATING THE PITCH,f (Hz) 1 '"THE ELECTRICAL RESISTANCE OF A THERMISTOR SHOWS A HIGH RATE OF CHANGE WITH TEMPERATURE CHANGES." 1 '"THE DENSITY OF THE STONE CAN BE CALCULATED FROM:" 1 '"THE DENSITY OF AN"'"UNKNOWN LIQUID CAN"'"BE COMPARED WITH"'"A LIQUID OF KNOWN"'"DENSITY BY TAKING"'"THE RATIO OF THE"'"HEIGHTS 'x' TO 'h'"'"AND MULTIPLYING BY"'"THE DENSITY OF THE"'"KNOWN LIQUID:" 1 '"THE DENSITY CAN BE CALCULATED BYDIVIDING THE MASS OF SAND, ADDEDUNDER 2. ABOVE, BY THE RISE IN VOLUME, RECORDED UNDER 3. ABOVE,AND MULTIPLYING THE RESULT BY 1000 AS THE VOLUME WAS MEASURED IN cm 1 '"THE CURVE CHOULD HAVE THE SHAPE OF THE EXAMPLE GIVEN HERE. THE m.pt. IS FOUND BY NOTING THE TEMPERATURE THAT REMAINS STEADY FOR A WHILE AND THEN CONTINUES TO FALL.(2 MARKS)" 1 '"THE COPPER BLOCK CAN BE HEATED TO 100 1 '"THE COOLING CURVE SHOULD HAVE THE TIME AS THE HORIZONTAL AXIS AND TEMPERATURE AS THE VERTICAL AXIS. (2 MARKS)" 1 '"THE CONTENTS OF THE TEST TUBE SHOULD BE STIRRED AT THE READINGOF THE TEMPERATURE TO ENSURE A RELIABLE MEASUREMENT.(2 MARKS)" 1 '"THE CALORIMETER RECEIVED A TOTALQUANTITY OF HEAT GIVEN BY:"''" (t2-t1)*(Mw+0.017)*4180" 1 '"THE BOTTLE, WHEN COLD, IS TAKEN OUT, DRIED AND THE TEMPERATURE OF THE LIQUID NOTED AT THE SAME TIME AS THE STOPCLOCK AND HEATERARE STARTED. (3 MARKS)" 1 '"THE BLOCK OF WAX WHICH IS FIRST TO MELT AND FALL OFF WILL SHOW THE METAL OF GREATER THERMAL CONDUCTIVITY. (2 MARKS)" 1 '"THE APPARATUS SHOWN MEASURES THEEXPANSIVITY OF A SUBSTANCE IN THE FORM OF A TUBE:" 1 '"THE ANSWER MUST GIVE THE UNIT OFLENGTH, m, TO SCORE ANY MARKS ATALL." 1 '"TAKING THE MEAN OF AT LEAST SIX MEASUREMENTS OF THE DENSITY OF THE SAND WILL GIVE A GREATER ACCURACY TO THE RESULT."'"(2 MARKS)" 1 '"T(N) : 3.6 14.4 34.4 57.6 90.0 f(Hz): 2.0 4.5 6.5 8.5 11 T/M : 10 20 30 40 50": 1 '"SUBTRACTING THE VOLUME OF THE PLASTICINE FROM FROM THAT OF THEWOOD AND PLASTICINE TOGETHER GIVES THE WOOD VOLUME. 1 '"STRIKING THE BOARD WILL PRODUCE A SOUND PULSE WHICH WILL ECHO BACK FROM THE WALL 200 m AWAY. (2 MARKS)" 1 '"STRIKING THE BOARD RHYTHMICALLY IN TIME WITH THE RETURNING SOUNDWILL GIVE, WHEN TIMED, A RATE OFSTRIKE, R. (3 MARKS)" 1 '"STATE YOUR METHOD CLEARLY FOR CALCULATING THE SPECIFIC THERMALCAPACITY OF COPPER FROM THE DATAYOU FIND FROM THE EXPERIMENT." 1 '"STATE WHAT STEPS YOU WOULD TAKE TO ENSURE ACCURACY IN RESULT YOUOBTAIN FOR THE CONSTANT."'"(16 MARKS)" 1 '"STATE CLEARLY IN YOUR METHOD HOWYOU ACCOUNT FOR ERRORS CAUSED BYWIND AND HUMAN REACTION TIME." 1 '"SP.LAT. HEAT (kJ/kg) MARKS"''" 315 1 '"SP. LATENT HEAT = 600*t J/kg" 1 '"SHOW IN YOUR ANSWER HOW YOU CAN COMPENSATE FOR THE LOSS OF HEAT DURING THE HEATING BY USING A CONTAINER OF ICE-COLD WATER BIG ENOUGH TO HOLD THE PLASTIC BOTTLE." 1 '"PLOT THE DATA USING 1/u AS THE HORIZONTAL AXIS AND 1/v AS THE VERTICAL AXIS. DRAW THE BEST STRAIGHT LINE YOU CAN THROUGH THE POINTS." 1 '"PLOT A GRAPH OF THE ABOVE DATA WITH f AS THE VERTICAL AXIS AND T/M AS THE HORIZONTAL AXIS.": 1 '"PERIOD (s) :1.7 4.2 5.7 7.7 10LENGTH (m) : 1 4 9 16 25 LENGTH : 1 2 3 4 5": 1 '"OTHER VALUES OF R SHOULD BE USEDSUCH AS THOSE LISTED BELOW:" 1 '"ON FIRING THE GUN, THE INTERVAL BETWEEN SEEING THE FLASH AND HEARING THE REPORT SHOULD BE TIMED. (2 MARKS)" 1 '"Mw IS THE MASS OF WATER IN kg. (1 MARK)" 1 '"Mc IS THE MASS OF COPPER IN kg. c IS THE SPECIFIC HEAT OF COPPERWHICH IS BEING CALCULATED. (1 MARK)" 1 '"MORE WATER IS THEN ADDED UNTIL RESONANCE IS HEARD AGAIN AND A NEW MEASUREMENT OF THE LENGTH OFTHE RESONATING COLUMN IS MADE. (3 MARKS)" 1 '"MEASUREMENTS MUST BE MADE WITH THE SOUND TRAVELLING DIRECTLY UPWIND OR DIRECTLY DOWNWIND. ANYOTHER DIRECTION OF THE SOUND RELATIVE TO THE WIND WILL GIVE AVALUE LOWER THAN THE TRUE SPEED.(2 MARKS)" 1 '"MEASUREMENT OF THE RADIOACTIVITY(AS KILO PULSES PER SECOND-kpps)FROM AN UNKNOWN ISOTOPE GAVE THERESULTS SHOWN BELOW OVER THE PERIOD OF TIME INDICATED:" 1 '"MAKE A GRAPH USING THE ABOVE DATA WITH h AS THE HORIZONTAL AXIS AND t 1 '"LENGTH (m) = 1/(2*GRADIENT)" 1 '"LENGTH (m) = 1/(2*GRADIENT) (14 MARKS)" 1 '"IT IS IMPORTANT TO REALISE THAT NOT ONLY IS HEAT BEING CONDUCTEDTOWARDS THE COLD END, IT IS ALSOBEING LOST FROM THE RODS TO THE SURROUNDING AIR. (3 MARKS)" 1 '"INDICATE HOW YOU COULD CALCULATETHE REFRACTIVE CONSTANT OF THE PERSPEX FROM THE RAY DIAGRAM YOUPRODUCE." 1 '"IN THE MEANTIME THE CALORIMETER CAN BE FILLED WITH SUFFICIENT WATER TO COVER THE COPPER BLOCK WHEN IMMERSED IN IT. (2 MARKS)" 1 '"ICE(g) :1000 890 780 680 570 460TIME(s): 0 60 120 180 240 300" 1 '"HUMAN REACTION TIME CAUSES A DELAY BETWEEN SEEING THE FLASH OF THE GUN AND STARTING THE STOPWATCH. THERE IS, HOWEVER, A SIMILAR REACTION DELAY BETWEEN HEARING THE REPORT AND STOPPING THE TIMING. SO THIS SOURCE OF ERROR IS SELF-COMPENSATING. (2 MARKS)" 1 '"HEATING IS CONTINUED UNTIL THE TEMPERATURE OF THE LIQUID IS AS MUCH ABOVE AMBIENT TEMPERATURE AS IT WAS BELOW IT AT THE START.(2 MARKS)" 1 '"GIVEN A QUANTITY OF DRY SAND, A BALANCE, A MEASURING CYLINDER GRADUATED IN cm 1 '"GIVEN A HAMMER, A STOUT BOARD, A STOPCLOCK AND AN ECHOING WALL 200 m AWAY FROM A MARKED SPOT, DESCRIBE HOW YOU COULD MEASURE THE SPEED OF SOUND ON A WINDLESSDAY." 1 '"GIVE AN EXAMPLE OF"'"THE CALCULATION OF"'"A LIQUID DENSITY "'"USING THIS METHOD"'"WHEN THE DENSITY"'"OF LIQUID 'H' IS"'"1212 kg/m 1 '"GIVE AN EXAMPLE OF THE SHAPE OF THE COOLING CURVE YOU WOULD GET IN YOU EXPERIMENT."'"(16 MARKS)" 1 '"GAVE, FOR A STRING OF 0.036kg/m,THE FOLLOWING RESULTS FOR THE FREQUENCY, f, UNDER VARIOUS TENSIONS, T:" 1 '"FROM 2.10 1 '"FRACTIONAL VALUES FOR R CAN BE MADE WITH RESISTORS IN PARALLEL AS WELL AS IN SERIES:" 1 '"FOR THIS PURPOSE YOU ARE GIVEN A SOURCE OF CONSTANT e.m.f. OF 6.0 V 1 '"FOR INSTANCE, TIMING 100 BLOWS STRUCK RHYTHMICALLY IN TIME WITHTHE RETURNING ECHO COULD TAKE 'T' SECONDS, GIVING THE RATE OF STRIKE, R, AS:" 1 '"FIND THE INTERCEPT ON THE 1/u AXIS WHEN 1/v = 0." 1 '"FIND THE GRADIENT OF THE LINE AND CALCULATE 'g' FROM:" 1 '"FIND THE GRADIENT (SLOPE) OF THEGRAPH AND CALCULATE A VALUE FOR 'g' FROM THE EQUATION:" 1 '"FINALLY THE SLOPE (GRADIENT) OF THE LINE SHOULD BE DETERMINED TOGET THE RATE OF CHANGE OF LENGTHWITH TEMPERATURE FOR THE SAMPLE.(2 MARKS)" 1 '"FINALLY THE LENGTH OF THE STEM BETWEEN THE CALIBRATION MARKS ISDIVIDED INTO 100 PARTS EQUALLY SPACED APART AND A FURTHER 10 SUCH DIVISIONS MARKED AT EACH END TO COVER THE INTENDED RANGE -10 1 '"EXPLAIN HOW YOU COULD MEASURE THE VELOCITY OF SOUND IN DAMP AIR USING ONLY A TUNING FORK OF KNOWN FREQUENCY (880 Hz), A GLASS CYLINDER 50 cm HIGH, WATERAND AN ACCURATE RULER." 1 '"EXPLAIN HOW YOU COULD MEASURE THE SPECIFIC THERMAL CAPACITY OF1 kg OF LIQUID IN A LIGHTWEIGHT PLASTIC BOTTLE, USING A TIMER, A FIXED WATTAGE HEATING COIL ANDA THERMOMETER COVERING THE RANGE-10 1 '"EXPLAIN HOW YOU CAN MEASURE THE VOLUME OF AN IRREGULAR PIECE OF WOOD USING A GRADUATED MEASURINGCYLINDER WIDE ENOUGH TO HOLD THEWOOD, WATER AND SOME PLASTICINE.(10 MARKS)" 1 '"EQUAL BLOCKS OF"'"WAX, m.pt. 85 1 '"EFFORT(N) : 4 11 16 20 24 LOAD(N) :200 400 600 800 1000" 1 '"DRAW THE BEST STRAIGHT LINE YOU CAN THROUGH THE POINTS AND USE THE LINE TO FIND THE TIME, t, NEEDED TO MELT ALL THE ICE." 1 '"DRAW THE BEST STRAIGHT LINE YOU CAN THROUGH THE POINTS AND FROM IT THE VALUE FOR THE INTERNAL RESISTANCE OF THE CELL AS THE HORIZONTAL AXIS INTERCEPT." 1 '"DRAW THE BEST STRAIGHT LINE YOU CAN THROUGH THE POINTS AND FIND ITS GRADIENT (SLOPE)." 1 '"DRAW SUITABLE CIRCUITS FOR THE METHOD YOU DESCRIBE." 1 '"DRAW A STRAIGHT LINE THROUGH THEPOINTS PLOTTED WITH 1 '"DRAW A DIAGRAM OF THE CIRCUIT YOU WOULD USE IN YOUR METHOD. (14 MARKS)"; 1 '"DIBENZYL IS A WHITE SOLID WITH Am.pt. BETWEEN 30 1 '"DESCRIBE HOW YOU WOULD USE THIS EQUIPMENT TO MEASURE THE THERMALEXPANSIVITY OF ALUMINIUM IN THE FORM OF A TUBE, OVER THE RANGE 0 1 '"DESCRIBE HOW YOU WOULD TRACE THEPASSAGE OF LIGHT RAYS THROUGH A RECTANGULAR BLOCK OF PERSPEX OF ABOUT 10cm LENGTH, 6cm WIDTH AND2cm THICKNESS, USING A RULER, A LARGE SHEET OF PAPER, FOUR PINS AND A PENCIL." 1 '"DESCRIBE HOW YOU WOULD SET ABOUTCALIBRATING THE INSTRUMENT. SPECIFY THE EQUIPMENT YOU WOULD REQUIRE FOR THE PURPOSE." 1 '"DESCRIBE HOW YOU WOULD MEASURE THE SPEED OF SOUND ON A WINDY DAY. YOU ARE PROVIDED WITH AN ASSISTANT, A STOPWATCH READING TO 0.1 s, A 500 m MEASURING TAPE 1 '"DESCRIBE HOW YOU WOULD MEASURE THE SPECIFIC THERMAL CAPACITY OFCOPPER. YOU ARE PROVIDED WITH A BLOCK OF COPPER, A LENGTH OF FINE WIRE, BOILING WATER IN A BEAKER LARGE ENOUGH TO TAKE THE COPPER BLOCK, A CALORIMETER WITHA WATER EQUIVALENT OF 17 g 1 '"DESCRIBE HOW YOU WOULD MEASURE THE DENSITY OF THE STONE USING THE EQUIPMENT PROVIDED. MENTION ONE FACTOR THAT WOULS ENABLE YOUTO IMPROVE THE ACCURACY OF THE DENSITY MEASUREMENT. (10 MARKS)" 1 '"DESCRIBE HOW YOU WOULD FIND THE MEAN DIAMETER KNOWING THAT THE DENSITY OF GLASS IS 2300 kg/m 1 '"DESCRIBE HOW YOU WOULD COMPARE THE THERMAL CONDUCTIVITY OF THE TWO METALS. POINT OUT AN OBVIOUSDEFECT INHERENT IN THIS METHOD." 1 '"DESCRIBE HOW YOU WOULD CARRY OUTAN INVESTIGATION INTO THE EFFECTON PITCH OF DIFFERENT DIAMETER STEEL WIRES UNDER EQUAL TENSION." 1 '"DESCRIBE HOW YOU WOULD CALIBRATEAN UNMARKED MOVING COIL AMMETER HAVING AN INTERNAL RESISTANCE OF0.5 1 '"DESCRIBE HOW YOU WOULD CALIBRATEA TERMISTOR OVER THE RANGE 0 1 '"DENSITY=1324*M1/(M1+M2-M3) kg/m 1 '"COMMENT ON POSSIBLE SOURCES OF ERROR IN YOUR METHOD AND HOW THEY CAN BE MINIMISED." 1 '"CALCULATE THE SPECIFIC LATENT HEAT OF FUSION OF ICE FROM:" 1 '"CALCULATE THE SLOPE OF THE LINE AND THEN THE REFRACTIVE CONSTANTWHICH IS EQUAL TO THE RECIPROCALOF THE SLOPE:"''"REFRACTIVE CONSTANT = 1/(SLOPE)"''"(16 MARKS)" 1 '"CALCULATE THE FOCAL LENGTH OF THE LENS FROM THE EQUATION:"''" FOCAL LENGTH = 1/(INTERCEPT)" 1 '"CALCULATE THE EFFICIENCY FROM:"''" E% = 2/GRADIENT."; 1 '"BY MAKING THE TUNING FORK SOUND OVER THE MOUTH OF THE CYLINDER AS IT IS GRADUALLY FILLED WITH WATER A RESONANCE POINT CAN BE CLEARLY HEARD. (2 MARKS)" 1 '"AT THIS POINT THE LENGTH BETWEENTHE MOUTH OF THE CYLINDER AND THE WATER LEVEL IN THE CYLINDER.(2 MARKS)" 1 '"AT LEAST 5 MEASUREMENTS SHOULD BE MADE IN EACH DIRECTION, UP WIND AND DOWNWIND (2 MARKS) AND THE COMPLETE SET REPEATED HAVINGEXCHANGED FIRING FOR TIMING WITHYOUR ASSISTANT. (2 MARKS)" 1 '"ALL THE RESULTS SHOULD THEN BE PLOTTED WITH TEMPERATURE AS THE HORIZONTAL AXIS AND INCREASE IN LENGTH AS THE VERTICAL AXIS. THEBEST STRAIGHT LINE THROUGH THE POINTS SHOULD BE DRAWN. (4 MARKS)" 1 '"A THERMISTOR CONSISTS OF A SMALLSEMI-CONDUCTING CERAMIC BEAD WITH TWO WIRE CONNECTIONS TO IT." 1 '"A TABLE OF RESULTS SHOULD BE PREPARED AND FROM THE DATA A GRAPH OF WIRE DIAMETER AS THE HORIZONTAL AXIS AGAINST PITCH AS THE VERTICAL AXIS SHOULD BE DRAWN. (2 MARKS" 1 '"A STUDY OF THE EQUATION FOR A VIBRATING STRING:" 1 '"A SIMILAR SET OF RESULTS SHOULD BE OBTAINED DECREASING THE HIGH TEMPERATURE BY SIMILAR INTERVALSAS BEFORE. (3 MARKS)" 1 '"A QUANTITY OF HOT WATER SHOULD BE PUT IN A BEAKER AND THE TEST TUBE WITH MOLTEN DIBENZYL PLACEDIN IT. (2 MARKS)" 1 '"A MEAN OF AT LEAST FIVE REPEATEDMEASUREMENTS WOULD GIVE A MORE ACCURATE RESULT. (2 MARKS)"; 1 '"A MACHINE WITH A VELOCITY RATIO OF 50 GAVE THE VALUES IN THE TABLE FOR THE EFFORT NEEDED TO LIFT VARIOUS LOADS:" 1 '"A HEATING COIL GIVING 600 J/s WAS USED TO MELT 1 kg OF ICE AT 0 1 '"A GRAPH SHOULD BE DRAWN FROM THERESULTS WITH TEMPERATURE AS THE HORIZONTAL AXIS AND RESISTANCE AS THE VERTICAL AXIS."'"(3 MARKS)" 1 '"A FINAL VALUE FOR n SHOULD BE FOUND FROM THE MEAN OF AT LEAST FIVE DIFFERENT RAY POSITIONS." 1 '"7.1 TO 7.4 N ... 1 MARK" 1 '"1. WEIGH THE DRY STONE AND NOTE ITS MASS (M1)." 1 '"1. FIND THE HALF-LIFE OF THE RADIOACTIVE ISOTOPE. 2. FIND THE ACTIVITY AFTER 3.5 MINUTES FROM THE START." 1 '"1. FILL THE CYLINDER WITH WATER TO A SUITABLE LEVEL ALLOWING FOR THE NEXT OPERATION. (1 MARK)" 1 '"(4 MARKS)" 1 '"(2 MARKS)" 1 '"(10 MARKS)"; 1 '" YOU SHOULD FIND LITTLE TROUBLE IN FITTING THE WORK INTO THE 45 MINUTES ALLOCATED." 1 '" THIS SHOULD ENCOURAGE YOU TO COMPLETE THIS AND THE PROGRAMS THAT FOLLOW AND GAIN GENUINE CONFIDENCE OF SUCCESS." 1 '" PAY PARTICULAR ATTENTION TO MARKING THE AXIS CORRECTLY IN YOUR GRAPHS. REMEMBER THAT IT IS BETTER TO START AFRESH THAN TO PRESENT WORK THAT HAS BEEN IN SOME WAY 'CORRECTED'." 1 '" Dx=(x/h)Dh"''"(4 marks)"; 1 '" FOCAL LENGTH(m) MARKS"''" 1.15 1 '" Dx = (x/h)*1212 kg/m 1 '" g = 39.2/(SLOPE) 1 '" ZERO LOAD(N) MARKS"''" 0.80 1 '" R int ( 1 '" g = 2/(GRADIENT) (12 MARKS)"; 1 '" EFFICIENCY % MARKS"''" 80.5 1 '" d = 1 '" (100-t2)*Mc*c"''" = (t2-t1)*(Mw+0.017)*4180" 1 '" g (m/s 1 '" (t2-t1)*(Mw+0.017)*4180"'" c ="'" (100-t2)*Mc"'"(2 MARKS)" 1 '" g(m/s 1 '" c = W * T" 1 '" n MARKS"''" 1.55 1 '" V = 2*(200/R)" 1 '" R = 100/T"'"(3 MARKS)" 1 "YOU WOULD BE EXPECTED TO FILL THE INSULATED CONTAINER WITH THELIQUID, PLACE THE THERMOMETER AND THE HEATING COIL IN IT AT THE START (2 MARKS)." 1 "YOU ARE SUPPLIED WITH TWO EQUAL PIECES OF PLASTICINE, A RULER, A CLOCK, A LARGE WATER TROUGH WITH WATER AND A SMOOTH STEEL BALL ABOUT 5 cm IN DIAMETER." 1 "YOU ARE PROVIDED WITH A QUANTITYOF DRY, WASHED SAND, A MEASURINGCYLINDER GRADUATED IN cm 1 "YOU ARE PROVIDED WITH A LONG LENGTH OF THIN WIRE AND A RULER GRADUATED IN MILLIMETRES." 1 "YOU ARE PROVIDED WITH A LARGE SHEET OF THIN POLYTHENE (ABOUT 0.2 mm THICK), A RULER GRADUATEDIN mm AND A PAIR OF SCISSORS. " 1 "WITH THE VERTICAL AXIS FOR THE CURRENT AND THE HORIZONTAL AXIS FOR THE VOLTAGE, PLOT THE ABOVE DATA AND DRAW THE BEST STRAIGHT LINE YOU CAN THROUGH THE POINTS." 1 "WITH THE POSITION OF THE PINS MARKED, THE BLOCK IS REMOVED ANDTHE POINTS JOINED TO SHOW THE PATH OF THE RAY." 1 "WIRE DIAMETER=Y/100 mm.(2 MARKS)" 1 "WIRE DIAMETER=10/X mm. (2 MARKS)" 1 "WHEN THE LIQUID REACHES A STEADYTEMPERATURE, THE HEATING COIL ISSWITCHED ON AND TIMING COMMENCED(2 MARKS)." 1 "WHEN Dh EQUALS 1212 kg/m 1 "WATER LEFT OVER = 65 cm 1 "WATER IS PASSED THROUGH THE TUBEAT A CONTROLLED TEMPERATURE FROM0 1 "USING THE HEATING COIL WITH 1 1 "TO SHOW THAT THE CENTRE OF MASS IS AT THE CROSSOVER POINT, THE LAMINATE CAN BE BALANCED ON THE TIP OF THE PENCIL PLACED EXACTLYAT THAT POINT(3 MARKS)." 1 "TO DO THIS WILL REQUIRE ABOUT 100 SMALL POLYTHENE SQUARES. (1 MARK)" 1 "TO CALCULATE THE REFRACTIVE CONSTANT A PERPENDICULAR IS DRAWN THROUGH THE POINT 'A' AND THE ANGLES XAB AND YAC MEASURED." 1 "THEN WATER IS ADDED TO THE SAND IN THE CYLINDER FROM THE BEAKER UNTIL ALL THE AIR IS DISPLACED FROM THE SAND AND THE WATER IS ONCE MORE AT THE SAME VOLUME AS AT THE START. SOME WATER WILL BE LEFT OVER IN THE BEAKER. (2 MARKS)" 1 "THE b.pt. OF THE MIXTURE CAME TO67 1 "THE WEIGHT OF THE BEAM ACTS AT ITS MID-POINT AND IN FAVOUR OF THE EFFORT AT F:","(1 MARK)" 1 "THE VIBRATING LENGTH IS GIVEN BYTHE EQUATION:" 1 "THE SPECIFIC THERMAL CAPACITY OFTHE LIQUID CAN BE MEASURED BY OBSERVING THE TEMEPERATURE RISE PRODUCED BY HEATING THE 1 kg MASS SUPPLED WITH THE COIL FOR A TIMED PERIOD. (3 MARKS)" 1 "THE RESISTANCE IS GIVEN BY:",,,"RESISTANCE ( 1 "THE REPORTED FIGURE FOR THE MEANTHICKNESS OF THE SHEET MUST NOT BE QUOTED TO AN EXCESSIVE DEGREEOF ACCURACY.": 1 "THE REFRACTIVE INDEX = h/d (1 MARK)" 1 "THE REFRACTIVE CONSTANT IS:" 1 "THE REFRACTIVE CONSTANT FOR THE MIXTURE OF ";WA;" g OF HEXANE AND "'WB;"gOF TETRABROMO METHANE IS"'"FOUND BY MULTIPLYING THE DIF-"'"FERENCE IN REFRACTIVE CONSTANT OF THE LIQUIDS,(1.6000-1.3754 = 0.2245) BY THE PROPORTION OF TETRABROMO METHANE:" 1 "THE RATIO OF THE REAL DEPTH TO THE APPARENT DEPTH OF AN OBJECT IMMERSED IN A LIQUID PROVIDES A SIMPLE METHOD FOR MEASURING ITS REFRACTIVE CONSTANT. (1 MARK)" 1 "THE PROPROTION OF WATER MIXED WITH ACETONE CAN BE FOUND BY:" 1 "THE PROPORTION OF PROPANOL, BY VOLUME, IS:" 1 "THE PROPORTION OF PROPANOL, BY VOLUME, IN THE MIXTURE IS WORKEDOUT BY:" 1 "THE POSITION OF THE POINTER FOR EACH VALUE OF THE CURRENT SHOULDBE CLEARLY MARKED ON THE DIAL. (1 MARK)" 1 "THE PITCH OF EACH STRING SHOULD BE MEASURED UNDER EQUAL TENSION.(2 MARKS)" 1 "THE MECHANICAL ADVANTAGE IS THE RATIO OF THE LOAD TO THE EFFORT: M.A. = 800/184 = 4.34 (3 MARKS)" 1 "THE MEASUREMNT OF THE HEIGHT OF THE PILE SHOULD BE MADE WITH THESTACK OF SMALL SQUARES UNDER A FIRM PRESSURE TO PREVENT AIR IN THE PILE ADDING FALSE HEIGHT. (3 MARKS)" 1 "THE MEAN BOILING POINT OF THE MIXTURE SHOULD BE QUOTED TO NO GREATER ACCURACY THAN 0.2 1 "THE LINES FOR EACH POSITION WILLBE SEEN TO CROSS AT ONE POINT- THE CENTRE OF MASS (2 MARKS)." 1 "THE LAMINATED SHEET IS BALANCED ON THE FINE EDGE OF THE RULER (2 MARKS). THEN A FINE LINE IS DRAWN ON THE LAMINATE ALONG THE EDGE OF THE RULER (1 MARK)." 1 "THE FOLLOWING VALUES FOR ZERO LOAD AND THE GRADIENT SCORE THE MARKS SHOWN:" 1 "THE FOLLOWING VALUES FOR THE REFRACTIVE CONSTANT SCORE MARKS:" 1 "THE FOLLOWING VALUES FOR THE INTERNAL RESISTANCE OF THE CELL SCORE MARKS:" 1 "THE FOLLOWING VALUES FOR THE GRADIENT SCORE MARKS:" 1 "THE FOLLOWING VALUES FOR THE ELASTIC LIMIT SCORE MARKS:" 1 "THE FOLLOWING VALUES FOR 'g' SCORE MARKS, PROVIDED THE UNITS ARE QUOTED (m/s 1 "THE FOLLOWING EFFICIENCY VALUES SCORE MARKS:" 1 "THE FINAL FIGURE FOR THE MEAN DIAMETER SHOULD NOT BE QUOTED TO MORE THAN THREE SIGNIFICANT FIGURES. (1 MARK)" 1 "THE EXPECTED METHOD IS TO WIND THE WIRE INTO A COIL OVER THE RULER WITH THE TURNS AS CLOSE ASPOSSIBLE. (3 MARKS)" 1 "THE EXPECTED METHOD IS TO FILL THE MEASURING CYLINDER, TO ITS MAXIMUM GRADUATED VOLUME, WITH WATER AND PLACE THIS MEASURED VOLUME INTO THE DRY BEAKER. (2 MARKS)" 1 "THE EXPECTED METHOD IS TO CUT UPTHE POLYTHENE SHEET INTO ENOUGH SMALL SQUARES SO THAT WHEN THEY ARE PILED UP THE TOTAL HEIGHT OFTHE PILE WOULD BE ABOUT 20 mm - A CONVENIENT SIZE TO MEASURE. (3 MARKS)" 1 "THE EFFICIENCY IS 100 TIMES THE MECHANICAL ADVANTAGE DIVIDED BY THE VELOCITY RATIO:",,," EFF. = 100*(4.34/3.2) = 137% (2 MARKS)" 1 "THE EFFICIENCY EXCEEDS 100% IN THIS CASE BECAUSE THE WEIGHT OF THE BEAM ASSISTS THE EFFORT. (2 MARKS)" 1 "THE DIAMETER OF THE DENT GIVES AMEASURE OF THE HARDNESS OF THE PLASTICINE (2 MARKS)." 1 "THE DATA GIVEN BELOW WAS NOTED DURING A STUDY OF THE EXTENSION OF A SPRING.",, "(L = LOAD(N); E = EXTENSION(cm)" 1 "THE CYLINDER IS THEN WIPED DRY AND FILLED TO THE SAME VOLUME WITH DRY SAND. (2 MARKS)" 1 "THE CYLINDER IS CLEANED OUT AND DRIED AGAIN. THEN THE WATER IN THE BEAKER IS MEASURED TO FIND THE SOLID VOLUME OF THE SAND. (2 MARKS)" 1 "THE CYLINDER FULL OF SAND SHOULDBE TAPPED GENTLY ON THE BENCH TOSETTLE THE SAND DOWN.","AIR TRAPPED IN THE SAND WHEN THEWATER IS ADDED CAN BE RELEASED BY ROTATING THE CYLINDER BETWEENTHE HANDS BRISKLY.","(3 MARKS)" 1 "THE COMPOSITION OF THE MIXTURE CAN BE CALCULATED FROM ITS b.pt.BY:" 1 "THE BOILING POINT MEASUREMENT SHOULD BE REPEATED AT LEAST FIVETIMES AND A MEAN CALCULATED. (2 MARKS)" 1 "THE BEAM SHOWN IN THE DIAGRAM ISUSED TO LIFT A LOAD OF 800 N." 1 "THE BALANCING IS REPEATED FOR ATLEAST 5 OTHER POSITIONS OF THE LAMINATE (2 MARKS)." 1 "THE AVERAGE THICKNESS IS:"," 22.5/100 mm, i.e. 0.225 mm." 1 "THE APPROPRIATE METHOD IS BASED ON RESONANCE. (1 MARK)" 1 "THE APPARENT DEPTH, d, OF THE MARK IS MEASURED USING PARALLAX TO COINCIDE A PIN, PLACED ALONG-SIDE THE CONTAINER, WITH THE MARK WHEN VIEWED FROM ABOVE. (1 MARK)" 1 "THE ANSWER SHOULD START WITH THESETTING UP OF THE EQUIPMENT WITHTHE TEMPERATURE AT, SAY, 0 1 "THE AIR SPACE BETWEEN THE SAND GRAINS IS FOUND BY SUBTRACTING THE VOLUME OF WATER LEFT IN THE BEAKER FROM THE ORIGINAL VOLUME OF WATER USED.",,"(2 MARKS)" 1 "TAKE THE TEMPERATURE WHEN THE MIXTURE JUST STARTS TO BOIL. (1 MARK)" 1 "STATE HOW YOU CAN SHOW THAT THE EXACT CENTRE OF MASS HAS BEEN FOUND, USING ONLY THE EQUIPMENT PROVIDED (3 MARKS)." 1 "STATE HOW THE ABOVE DATA CAN BE USED TO FIND THE PROPORTION OF WATER IN A MIXTURE WITH ACETONE." 1 "SOME METHOD OF MAKING SURE THE TURNS ARE AS CLOSE AS POSSIBLE SHOULD BE MENTIONED. (2 MARKS)" 1 "REPEATING THE EXPERIMENT AT LEAST FIVE TIMES WILL IMPROVE THE ACCURACY OF THE MEAN RESULT.(2 MARKS)" 1 "REPEATED MEASUREMENT, AT LEAST FIVE TIMES, IMPROVES ACCURACY (2 MARKS)." 1 "QUESTION 1.": 1 "PUTTING THE PREPARED PLASTICINE SLABS AND THE STEEL BALL IN THE WATER TROUGH LONG ENOUGH, SAY 30MINUTES, WILL REMOVE VARIATIONS DUE TO TEMPERATURE DIFFERENCES (3 MARKS)." 1 "PROPANOL IS A LIQUID HAVING A DENSITY OF 804.4";U$;" 1 "PRESS 'ENTER'. ";I$: 1 "PRESS 'ENTER'. ";I$ 1 "PRESS 'ENTER' TO SEE THE MARKINGSCHEME, ENTER 'R' TO REVIEW THE QUESTION. "; 1 "PRESS 'ENTER' TO SEE THE MARKINGSCHEME ENTER 'R' TO REVIEW THE QUESTION. ";I$: 1 "PRESS 'ENTER' FOR THE LAST STAGE";I$ 1 "PRESS 'ENTER' FOR THE GRAPH.";I$: 1 "PRESS 'ENTER' FOR MARKING. ";I$: 1 "PREPARING THE PLASTICINE SLABS ON THE SHAPE OF A SQUARE OF THE SAME SIZE FOR BOTH SAMPLES WILL ELIMINATE POSSIBLE THICKNESS DIFFERENCES (2 MARKS)." 1 "PLOT LOAD AS THE HORIZONTAL AXISAND EXTENSION AS THE VERTICAL AXIS. DRAW A STRAIGHT LINE GRAPHTHROUGH THE RELIABLE POINTS, ANDFROM THE GRAPH:" 1 "PLOT A GRAPH HAVING 1/p AS THE X-AXES (HORIZONTAL) AND v AS THEY-AXES (VERTICAL). DRAW THE BESTSTRAIGHT LINE THROUGH THE POINTSAND THROUGH THE ZERO VALUES." 1 "PHYSICS 9" 1 "PHYSICS 17" 1 "PHYSICS 16" 1 "PHYSICS 11" 1 "PHYSICS 10" 1 "PHYSICS 1" 1 "PHYISCS 22" 1 "PHYISCS 21" 1 "PHYISCS 20" 1 "PHYISCS 19" 1 "PHYISCS 18" 1 "PHYISCS 15" 1 "PHYISCS 14" 1 "PHYISCS 13" 1 "PHYISCS 12" 1 "PAY PARTICULAR ATTENTION, IN YOUR ANSWER, TO THE CONTROL OF TEMPERATURE AND TO ANY OTHER FACTORS YOU CONSIDER WOULD HAVE AN AFFECT ON THE ACCURACY OF THERESULTS." 1 "P(kPa): 1.00 1.11 1.25 1.43 1.67V(dm 1 "ORIGINAL WATER VOLUME =100 cm 1 "ON A FLAT SLAB OF PLASTICINE THESTEEL BALL WOULD MAKE A CIRCULARDENT DEPENDING ON HOW LONG IT ISLEFT ON THE PLASTICINE (1 MARK),THE TEMPERATURE OF THE SAMPLE (2 MARKS) AND THE THICKNESS OF THE SLAB (2 MARKS)." 1 "LOAD(N) 10 20 30 40 50 FORCE(N)1.60 1.95 2.55 2.90 3.55" 1 "LEAVING THE STEEL BALL ON THE PLASTICINE FOR EQUAL TIMES WILL MAKE THE TEST EQUALLY FAIR FOR BOTH SAMPLES(2 MARKS)." 1 "L000048008008020034065000" 1 "L(N) : 1 2 3 4 5 6 7 8 9 10 E(cm): 1 2 3 4 5 6 7 7.7 8.3 8.6" 1 "INDICATE IN YOUR ANSWER THE MAINSOURCES OF ERROR YOU WOULD FIND AND THE MEASURES YOU COULD TAKE TO MINIMISE THEM." 1 "IN THIS TYPE OF EXPERIMENT TWO MAIN HEAT LOSSES ARISE: THE HEATUSED TO WARM UP THE EQUIPMENT i.e. THE CONTAINER, THERMOMETER AND COIL 1 "IN THIS METHOD A MARK IS MADE ONTHE BOTTOM OF A CONTAINER AND ITIS THEN FILLED TO A HEIGHT, h, WITH THE LIQUID. (1 MARK)" 1 "IN THIS CASE THE DENSITY OF THE MIXTURE WAS ";Dm;U$;" SO ";("HERE" 1 "IN SETTING UP THE EQUIPMENT YOU MUST BE SURE THE WAX BLOCKS ARE EQUAL IN SIZE AND THE ATTACHMENTTO THE METAL RODS IS THE SAME INBOTH CASES. (2 MARKS)" 1 "IN PRINCIPLE THIS EXPERIMENT REQUIRES THE COPPER BLOCK TO BE HEATED TO A KNOWN TEMPERATURE 1 "IN ALL CASES THE UNIT, 1 "I(A) = 3.45 2.63 1.79 1.54 1.25": 1 "HEXANE HAS A REFRACTIVE CONSTANTOF 1.3754 THAT OF TETRABROMO METHANE IS 1.6000. WHAT VALUE OF REFRACTIVE CONSTANT WOULD BE EXPECTED FOR A MIXTURE OF ";WA;"g"'"OF HEXANE WITH ";WB;"g OF TETRA-"'"BROMO METHANE?" 1 "HEAT THE MIXTURE IN A TEST TUBE IN A CONTAINER OF HOT WATER AWAYFROM FLAMES.",,"(2 MARKS)" 1 "GRAPH THIS DATA USING R ( 1 "GIVEN THAT THE BEAM WEIGHS 100 NAND THE PIVOT HAS NO FRICTION, CALCULATE THE EFFORT NEEDED TO LIFT THE LOAD, THE MECHANICAL ADVANTAGE OF THE SYSTEM AND ITS EFFICIENCY. "; 1 "GIVEN AN INSULATED CONTAINER, A HEATING COIL OF FIXED WATTAGE,A THERMOMETER AND A STOPCLOCK, DESCRIBE HOW YOU WOULD MEASURE ACCURATELY THE RATE OF RISE OF TEMPERATURE IN A LIQUID BEING HEATED BY THE COIL. COMMENT ON THE MAIN HEAT LOSSES ARISING FROM YOUR EXPERIMENT." 1 "G000000000000000000000000" 1 "FROM 1.30 1 "FOR A BEAM, THE VELOCITY RATIO IS SIMPLY THE RATIO OF THE ARMS: V.R. = 16/5 = 3.2 (2 MARKS)" 1 "FIRST AN AMOUNT OF PLASTICINE SUFFICIENT TO SINK THE WOOD IS FOUND (2 MARKS)." 1 "FIND THE GRADIENT (SLOPE) OF THEGRAPH AND SO CALCULATE THE VALUEOF k IN THE EQUATION:",,, 1 "F=(4000-1050)/16=184 N.(3 MARKS)" 1 "EXPLAIN THE UNUSUAL VALUE FOR THE EFFICIENCY." 1 "EXAMPLE:": 1 "ENTER 'Y' TO REVIEW THE QUESTIONPRESS 'ENTER' TO SEE THE MARKINGSCHEME. ";I$: 1 "ENTER 'Y' TO REVIEW THE QUESTIONPRESS 'ENTER' TO FINISH. ";I$: 1 "ENTER 'Y' TO REVIEW THE DIAGRAM PRESS 'ENTER' FOR THE MARKING SCHEME. ";I$: 1 "EITHER THE TIME MAY BE TAKEN FORA FIXED RISE IN TEMPERATURE OR THE RISE CAN BE MEASURED FOR A FIXED TIME PERIOD. IN BOTH CASESTHE RATE OF TEMPERATURE RISE IS THE TOTAL RISE DIVIDED BY THE TIME TAKEN (2 MARKS)." 1 "DRAW THE BEST STRAIGHT LINE YOU CAN THROUGH THE POINTS. WORKOUT THE GRADIENT (SLOPE) OF THE LINEAND USE IT TO FIND THE VIBRATINGLENGTH OF THE STRING, l, FROM:" 1 "DO NOT ALLOW THE MIXTURE TO BOILFOR LONG IN THE HOT WATER- THIS MAY CHANGE ITS COMPOSITION. (1 MARK)" 1 "DESCRIBE HOW YOU WOULD USE THE EQUIPMENT SUPPLIED TO COMPARE THE HARDNESS OF THE TWO SAMPLES." 1 "DESCRIBE HOW YOU WOULD MEASURE ACCURATELY THE AVERAGE THICKNESSOF THE POLYHENE." 1 "DESCRIBE HOW YOU WOULD MEASURE ACCURATELY THE AVERAGE DIAMETER OF THE WIRE." 1 "DESCRIBE HOW YOU WOULD DETERMINETHE BOILING POINT OF A MIXTURE OF THESE TWO LIQUIDS AND EXPLAINHOW YOU COULD ESTIMATE, FROM THEBOILING POINT, THE PROPORTIONS OF THE TWO COMPONENTS." 1 "DESCRIBE HOW YOU COULD USED THE EQUIPMENT SUPPLIED TO MEASURE THE SPACE BETWEEN THE PARTICLES OF SAND ON A VOULME BASIS, i.e. 1 "DESCRIBE AND MAKE A DIAGRAM OF ASIMPLE METHOD FOR MEASURING THE REFRACTIVE CONSTANT OF A LIQUID.STATE HOW YOU THINK ACCURACY IN THE METHOD YOU DESCRIBE COULD BEIMPROVED." 1 "DESCRIBE A METHOD FOR MEASURING THE DENSITY OF A LIQUID AT ROOM TEMPERATURE." 1 "DESCRIBE A METHOD FOR FINDING THE CENTRE OF MASS OF A THIN SHEET OF IRREGULARLY SHAPED HARDLAMINATED PLASTIC. YOU ARE GIVENONLY A PENCIL AND A FINE-EDGED RULER WITH WHICH TO WORK." 1 "D000000000000000000000000" 1 "CURRENT(A): 1.0 1.0 2.0 2.0 3.0VOLTAGE (V): 1 2 3 4 5" 1 "CLOCKWISE- F*16 + 100*10.5" 1 "CALIBRATING THE 0 1 "CALCULATE THE GRADIENT (SLOPE) OF THE LINE AND HENCE THE VALUE OF THE RESISTANCE WHICH IS EQUALTO THE RECIPROCAL OF THE SLOPE." 1 "BY WINDING 'X' TURNS SO THAT THECOIL IS 10 mm WIDE, FOR EXAMPLE,THE AVERAGE DIAMETER OF THE WIRECAN BE FOUND FROM:" 1 "BOTH PINS ARE VIEWED THROUGH THEBLOCK AND PINS AT 'C' AND 'D' ARE PLACED DIRECTLY IN LINE WITHTHE FIRST TWO. CARE AND PATIENCEARE NEEDED TO GET THIS RIGHT." 1 "AT LEAST FIVE MEASUREMENTS OF THE DIAMETER SHOULD BE MADE AND A MEAN TAKEN. (2 MARKS)" 1 "AT LEAST 100 MARBLES SHOULD BE WEIGHED AND THEIR MASS RECORDED.(2 MARKS)" 1 "ASSUMING BOTH LIQUIDS MIX FREELYWITH NO VOLUME CHANGE, CALCULATETHE PROPORTION, BY VOLUME, OF PROPANOL TO WATER IN A MIXTURE OF DENSITY ";Dm;U$;"." 1 "ANTICLOCKWISE- 800*5 = 4000 Nm" 1 "AND ADDING TO THIS THE VALUE OF THE REFRACTIVE CONSTANT, 1.3754,OF HEXANE:"''.002245 1 "AN EXPERIMENT TO STUDY BOYLE'S LAW PRODUCED THESE RESULTS:" 1 "ALTERNATIVELY A COIL OF WIDTH 'Y' MADE WITH 100 TURNS OF WIRE WOULD GIVE A MEAN DIAMETER OF:" 1 "ALSO IN BOTH CASES A TEMPERATURERISE OF AT LEAST 30 K IS NEEDED FOR AN ACCURATE RESULT (1 MARK)." 1 "AIR IN 100cm 1 "ACETONYL AND ETHERONE ARE TWO VERY INFLAMMABLE LIQUIDS 1 "A048072072048000000000000" 1 "A STUDY WAS MADE OF OHM'S LAW USING AN INACCURATE AMMETER. THESE ARE THE RESULTS OBTAINED:" 1 "A STUDY OF THE MINIMUM FORCE REQUIRED TO MOVE A WOODEN BLOCK ON A RUBBER SURFACE WAS MADE WITH THE FOLLOWING LOADS PLACED ON THE BLOCK:" 1 "A SONOMETER SHOULD BE USED AS SHOWN BELOW, (1 MARK). THE WIRE IS TENSIONED BY THE LOAD 'T', PASSES OVER A SMALL PULLEY AND THE VIBRATING LENGTH, l, IS SET BY TWO SUPPORTS. THE WIRE IS FINALLY SECURED TO THE SONOMETERBY A PEG." 1 "A SIMPLE METHOD FOR TRACING RAYSTHROUGH A TRANSPARENT BLOCK IS TO PLACE THE BLOCK IN THE CENTREOF THE SHEET OF PAPER AND MARK ITS OUTLINE ON THE PAPER USING THE PENCIL." 1 "A SIMILAR PROCEDURE CAN BE USED TO FIND THE PROPORTION OF THE ETHERONE IN THE MIXTURE.","(1 MARK)" 1 "A PIN IS PLACED AT 'A', RIGHT NEXT TO THE BLOCK AND ANOTHER IS PLACED AT 'B', CLOSE TO THE EDGE OF THE PAPER." 1 "A MEASURED DISTANCE OF AT LEAST 1000 m SHOULD SEPARATE YOU FROM YOUR ASSISTANT. (2 MARKS)" 1 "A DENSITY BOTTLE IS USED FOR THEMEASUREMENT OF LIQUID DENSITIES.THE VOLUME OF THE BOTTLE HAS BEEN DETERMINED PREVIOUSY USING AIR-FREE WATER AS A STANDARD. (3 MARKS)" 1 "3. WORK OUT THE SLOPE (GRADIENT) OF THE GRAPH." 1 "3. WORK OUT THE GRADIENT (SLOPE)OF THE GRAPH AND CALCULATE THE 1 "3. THE REST IS ETHERONE THAT IS (92-t)/39 = 25/39 = 0.64." 1 "3. RECORD THE RISE IN VOLUME IN THE CYLINDER. (1 MARK)" 1 "3. PLACE THE STONE IN THE BEAKER FULL OF LIQUID, REMOVE THE OVERFLOW, WEIGH AGAIN AND NOTE THE MASS (M3). (4 MARKS)" 1 "3. DIVIDING THE RESULT IN 2. BY THE RESULT IN 1. GIVES THE PROPORTION SOUGHT. (2 MARKS)",,,, 1 "3. DIVIDING THE DIFFERENCE IN 2. BY THE DIFFERENCE IN 1. TO FIND THE PROPORTION OF ACETONYL IN THE MIXTURE."," (2 MARKS)" 1 "3. THE DENSITY OF THE LIQUID IS CALCULATED BY DIVIDING ITS MASS BY THE VOLUME OF THE BOTTLE. (1 MARK)" 1 "2. WEIGH THE BEAKER COMPLETELY FULL OF LIQUID AND RECORD ITS MASS (M2)." 1 "2. THEN ADD A KNOWN MASS OF SAND PREVIOUSLY WEIGHED ON THE BALANCE. (2 MARKS)" 1 "2. THE PROPORTION OF ACETONYL IS (t-53)/39 = 14/39 = 0.36." 1 "2. SUBTRACTING THE RATE OF RISE OF TEMPERATURE OF THE MIXTURE FROM THAT OF ACETONE (1 MARK)" 1 "2. SUBTRACTING THE BOILING POINT OF ACETONYL (53 1 "2. FROM THE GRAPH FIND THE VALUE OF THE FORCE NEEDED TO MOVE THE WOODEN BLOCK ON ITS OWN (THE ZERO-LOAD FORCE)" 1 "2. FIND THE INTERCEPT ON THE HORIZONTAL AXIS WHEN THE VALUE OF 1/I IS ZERO." 1 "2. DEDUCE AN ACCURATE VALUE FOR THE MAXIMUM SAFE LOADING OF THE SPRING. (14 MARKS)"; 1 "2. DIVIDING THE RESULT BY THE DENSITY RANGE, i.e. THE DIFFERENCE IN DENSITY OF THE TWO LIQUIDS. (2 MARKS)" 1 "100 SQUARES MADE A PILE 22.5 mm HIGH.": 1 "1/I = 0.29 0.38 0.56 0.65 0.80" 1 "1.10 TO 1.20 cm/N ... 1 MARK" 1 "1. THE RATE OF LOSS OF HEAT FROM THE RODS IN ITSELF CAN AFFECT THE RESULT OF THE COMPARISON. (2 MARKS)"'"2. THE SAME LOSS OF HEAT LIMITS THE LENGTH OF THE RODS SINCE TOO GREAT A LENGTH WILL NOT LET THE TEMPERATURE AT THE ENDS RISE ENOUGH TO MELT THE WAX. (2 MARKS)" 1 "1. THE DIFFERENCE IN THE b.pts. OF THE PURE LIQUIDS IS 39 1 "1. TAKING THE DIFFERNCE IN b.pt. OF THE TWO LIQUIDS (39 1 "1. TAKING THE DIFFERENCE IN THE HEATING RATE OF THE TWO PURE LIQUIDS (1 MARK)." 1 "1. PLOT A GRAPH OF LOAD (X-AXIS) AGAINST FORCE (Y-AXIS)." 1 "1. PLOT A GRAPH HAVING VALUES OF 1/I AS THE VERTICAL AXIS 1 "1. FIND THE GRADIENT (SLOPE) OF THE LINE." 1 "1. THE BOTTLE IS RINSED, FILLED WITH THE LIQUID AND WEIGHED. (2 MARKS)",,"2. THE MASS OF THE EMPTY BOTTLE IS THEN SUBTRACTED FROM THE TOTAL MASS TO GET THE MASS OF THE LIQUID. (1 MARK)" 1 "1. SUBTRACTING THE DENSITY OF PROPANOL (0.8044) FROM THE DENSITY OF THE MIXTURE. (2 MARKS)" 1 "(4 MARKS)"; 1 "(4 MARKS)" 1 "(3 MARKS)" 1 "(16 MARKS)"; 1 "(15 MARKS)"; 1 "(14 MARKS)": 1 "(13 MARKS)"; 1 "(12 MARKS)" 1 "(";Dm;"-804.4)/(998.2-804.4)","= ";RAT;"00"'"(3 MARKS)"; 1 "'"(1 MARK)" 1 "'" 1 " 0.2245*";WB;"/(";WA;"+";WB;") = ";.002245 1 " (2 MARKS)": 1 " (14 MARKS)"; 1 " e.m.f. = 1/(GRADIENT)",,,"(16 MARKS)" 1 WHICH WOULD"'"LET 4 A PASS"'"(2 MARKS)" 1 VOLUME OF DRY SAND =100 cm 1 THEN THE EQUATION CHANGES TO:" 1 RESISTORS." 1 OF SAND = 35 cm 1 OF SAND." 1 HOMESTUDY LTD."''" M.J.Rickards, M.Sc." 1 AS THE VERTICAL AXISAND DRAW THE BEST STRAIGHT LINE YOU CAN THROUGH THE POINTS. "; 1 AND WATER, DESCRIBE HOW YOU WOULD MEASURE THE DENSITY OF THE SAND. MENTIONFACTORS WHICH WOULD INFLUENCE THE ACCURACY OF YOUR RESULTS." 1 AND THE MASS IN g."'"(4 MARKS)" 1 AND MULTIPLIED BY 6. THE CUBE ROOT OF THIS FIGURE GIVES THE MEAN DIAMETER SOUGHT." 1 9.9 4"'" 10.0 1 9.6 3"'" 9.7 1 9.3 2"'" 9.4 1 8.9 1"'" 9.0 1 2.21 m ...1 MARK 2.22 2.27 m ...2 MARKS 2.28 2.31 m ...3 MARKS 2.32 2.36 m ...4 MARKS 2.37 2.40 m ...3 MARKS 2.41 2.46 m ...2 MARKS 2.47 2.54 m ...1 MARK" 1 1.25 1" 1 1.10 2"'" 1.11 1 0.89 1"'" 0.90 1 .....3 MARKS 1.81 2.00 1 .....2 MARKS 2.01 2.15 1 .....2 MARKS 1.56 1.80 1 .....1 MARK" 1 .....1 MARK 1.40 1.54 1 (4 MARKS)" 1 AND THE DIAMETER OF A SPHERE IS GIVEN BY:" 1 (14 MARKS)";