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UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Advanced Subsidiary Level and Advanced Level * 8 9 5 5 3 1 3 3 5 8 * PHYSICS 9702/23 Paper 2 AS Structured Questions
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  This document consists of 16  printed pages. DC (CW/DJ) 29964/5 © UCLES 2011 [Turn over UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONSGeneral Certificate of EducationAdvanced Subsidiary Level and Advanced Level READ THESE INSTRUCTIONS FIRST Write your Centre number, candidate number and name on all the work you hand in.Write in dark blue or black pen.You may use a soft pencil for any diagrams, graphs or rough working.Do not use staples, paper clips, highlighters, glue or correction fluid.DO NOT  WRITE IN ANY BARCODES.Answer all  questions.You may lose marks if you do not show your working or if you do not use appropriate units.At the end of the examination, fasten all your work securely together.The number of marks is given in brackets [ ] at the end of each question or part question. * 8 9 5 5 31 3 3 5 8* PHYSICS   9702/23 Paper 2 AS Structured Questions May/June 2011   1 hour Candidates answer on the Question Paper.No Additional Materials are required. For Examiner’s Use1234567Total  2 9702/23/M/J/11 © UCLES 2011 Data speed of light in free space, c = 3.00 × 10 8  ms –1 permeability of free space, μ  0   = 4 π   × 10 –7  Hm –1 permittivity of free space, ε  0   = 8.85 × 10 –12  Fm –1 elementary charge, e = 1.60 × 10 –19  Cthe Planck constant, h = 6.63 × 10 –34  Jsunified atomic mass constant, u = 1.66 × 10 –27  kgrest mass of electron, m  e   = 9.11 × 10 –31  kgrest mass of proton, m  p   = 1.67 × 10 –27  kgmolar gas constant, R = 8.31 JK –1 mol –1 the Avogadro constant, N  A   = 6.02 × 10 23 mol –1 the Boltzmann constant, k = 1.38 × 10 –23 J K –1 gravitational constant, G = 6.67 × 10 –11  Nm 2 kg –2 acceleration of free fall, g = 9.81 ms –2  3 9702/23/M/J/11 © UCLES 2011 [Turn overFormulae uniformly accelerated motion, s   = ut + 12 at  2   v  2  = u  2  + 2 as  work done on/by a gas, W   = p   V  gravitational potential, φ   = – Gm r  hydrostatic pressure, p   =  ρ gh  pressure of an ideal gas, p   = 13   Nm V  < c 2 >simple harmonic motion, a   = – ω    2 x  velocity of particle in s.h.m., v   = v  0  cos ω  t    v   = ±   ω   ( x  02  – x 2 )electric potential, V   = Q  4 π ε  0 r  capacitors in series, 1/  C   = 1/  C  1  + 1/  C  2  + . . .capacitors in parallel, C   = C  1  + C  2  + . . .energy of charged capacitor, W   = 12   QV  resistors in series, R   = R  1  + R  2  + . . .resistors in parallel, 1/  R   = 1/  R  1  + 1/  R  2  + . . .alternating current/voltage, x   = x  0  sin ω  t  radioactive decay, x   = x  0  exp(– λ  t  )decay constant, λ   = 0.693 t  12  4 9702/23/M/J/11 © UCLES 2011 For Examiner’s Use  1 (a) For each of the following, tick [ ✓ ] one box to indicate whether the experimental technique would reduce random error, systematic error or neither. The first row has been completed as an example.random errorsystematic errorneitherkeeping your eye in line with the scale and the liquid level for a single reading of a thermometer ✓ averaging many readings of the time taken for a ball to roll down a slopeusing a linear scale on an ammetercorrecting for a non-zero reading when a micrometer screw gauge is closed [2]  (b) The measurement of a particular time interval is repeated many times. The readings are found to vary. The results are shown in Fig. 1.1.10.002468numberof readings10.210.4reading of time interval    /    s10.610.8 Fig. 1.1  The true value of the time interval is 10.1 s.
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