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Cambridge International Examinations Cambridge International Advanced Subsidiary and Advanced Level

PHYSICS Paper 2 AS Level Structured Questions

Candidates answer on the Question Paper. No Additional Materials are required.

9702/22 February/March 2016

1 hour 15 minutes

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 an HB pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. DO NOT WRITE IN ANY BARCODES.

Answer all questions.

Electronic calculators may be used. 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.

DC (NF/SW) 107947/3 ? UCLES 2016

This document consists of 14 printed pages and 2 blank pages.

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Data speed of light in free space permeability of free space permittivity of free space

elementary charge the Planck constant unified atomic mass unit rest mass of electron rest mass of proton molar gas constant the Avogadro constant the Boltzmann constant gravitational constant acceleration of free fall

2

c = 3.00 ? 108 m s-1

0 = 4 ? 10-7 H m-1

0 = 8.85 ? 10-12 F m-1

(

1

40

= 8.99 ? 109 m F-1)

e = 1.60 ? 10-19 C

h = 6.63 ? 10-34 J s

1 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 ? 1023 mol-1 k = 1.38 ? 10-23 J K-1

G = 6.67 ? 10-11 N m2 kg-2

g = 9.81 m s-2

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Formulae uniformly accelerated motion

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.

Doppler effect

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

3

s

=

ut

+

1 2

at

2

v 2 = u 2 + 2as

W = pV

=

-

Gm r

p = gh

p

=

1 3

Nm V

c 2

a = - 2x

v = v0 cos t

v = ? ( x 0 2 ? x 2 )

fo

=

fsv v ? vs

V

=

Q

40r

1/C = 1/C1 + 1/C2 + . . .

C = C1 + C2 + . . .

W

=

1 2

QV

I = Anvq

R = R1 + R2 + . . .

1/R = 1/R1 + 1/R2 + . . .

VH

=

BI ntq

x = x0 sin t

x = x0 exp(-t )

=

0.693 t1

2

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9702/22/F/M/16

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4 BLANK PAGE

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9702/22/F/M/16

5 Answer all the questions in the spaces provided.

1 The speed v of a transverse wave on a uniform string is given by the expression

v =

T l m

where T is the tension in the string, l is its length and m is its mass.

An experiment is performed to determine the speed v of the wave. The measurements are shown in Fig. 1.1.

quantity T l m

measurement 1.8 N 126 cm 5.1 g

uncertainty ? 5% ? 1% ? 2%

Fig. 1.1 (a) State an appropriate instrument to measure the length l.

.............................................................................................................................................. [1] (b) (i) Use the data in Fig. 1.1 to calculate the speed v.

v = ................................................. m s-1 [2]

(ii) Use your answer in (b)(i) and the data in Fig. 1.1 to determine the value of v, with its absolute uncertainty, to an appropriate number of significant figures.

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v = ...................................... ? ......................................m s-1 [3]

9702/22/F/M/16

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