# Physics as Paper 2

Topics: Boltzmann constant, Avogadro constant, Physical constant Pages: 11 (2151 words) Published: April 1, 2013
UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Advanced Subsidiary Level and Advanced Level

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PHYSICS Paper 2 AS Structured Questions Candidates answer on the Question Paper. No Additional Materials are required. 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.

9702/22
May/June 2010 1 hour

For Examiner’s Use 1 2 3 4 5 6 7 Total

This document consists of 16 printed pages and 4 blank pages. DC (LEO/DJ) 17382/3 © UCLES 2010

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2 Data speed of light in free space, permeability of free space, permittivity of free space, elementary charge, the Planck constant, unified atomic mass constant, rest mass of electron, rest mass of proton, molar gas constant, the Avogadro constant, the Boltzmann constant, gravitational constant, acceleration of free fall, c = 3.00 × 10 8 m s –1

μ0 = 4π × 10 –7 H m–1
0

= 8.85 × 10 –12 F m–1

e = 1.60 × 10 –19 C h = 6.63 × 10 –34 J s u = 1.66 × 10 –27 kg me = 9.11 × 10 –31 kg mp = 1.67 × 10 –27 kg R = 8.31 J K –1 mol –1 NA = 6.02 × 10 23 mol –1 k = 1.38 × 10 –23 J K–1 G = 6.67 × 10 –11 N m 2 kg –2 g = 9.81 m s –2

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3 Formulae uniformly accelerated motion, s = ut + 1 at 2 2 v 2 = u 2 + 2as W=p V

work done on/by a gas, gravitational potential, hydrostatic pressure, pressure of an ideal gas, simple harmonic motion, velocity of particle in s.h.m.,

φ = – Gm r
p = gh p=
1 3

Nm 2 V
2x

a=–

v = v0 cos t v = ± ω (x02 – x 2) V= Q 4π 0r

electric potential,

capacitors in series, capacitors in parallel, energy of charged capacitor, resistors in series, resistors in parallel, alternating current/voltage, radioactive decay, decay constant,

1/C = 1/C1 + 1/C2 + . . . C = C1 + C2 + . . . W = 1 QV 2 R = R1 + R2 + . . . 1/R = 1/R1 + 1/R2 + . . .

x = x0 sin ωt x = x0 exp(– λt)

λ = 0.693
t
1 2

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4 BLANK PAGE

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5 Answer all the questions in the spaces provided.
For Examiner’s Use

1

A metal wire has a cross-section of diameter approximately 0.8 mm. (a) State what instrument should be used to measure the diameter of the wire. ...................................................................................................................................... [1] (b) State how the instrument in (a) is (i) checked so as to avoid a systematic error in the measurements, .................................................................................................................................. .............................................................................................................................. [1] (ii) used so as to reduce random errors. .................................................................................................................................. .................................................................................................................................. .............................................................................................................................. [2]

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6 2 (a) The distance s moved by an object in time t may be given by the expression s = 1 at 2 2
For Examiner’s Use

where a is the acceleration of the object. State two conditions for this expression to apply to the motion of the object. 1....