Physics 9702/22 — February/March 2016

Cambridge AS Level · AS Level Structured Questions · worked solutions for every part, with the mark scheme

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Topics Waves · Work, Energy and Power · Measurement Techniques · Physical Quantities and Units · Kinematics · Deformation of Solids · +5 more

Q1Measurement TechniquesWavesPhysical Quantities and UnitsFree sample

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

v = \sqrt{\frac{Tl}{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	measurement	uncertainty
$T$	$1.8\text{ N}$	$\pm 5\%$
$l$	$126\text{ cm}$	$\pm 1\%$
$m$	$5.1\text{ g}$	$\pm 2\%$

Fig. 1.1

(a)

State an appropriate instrument to measure the length $l$ .

(b)

(i)

Use the data in Fig. 1.1 to calculate the speed $v$ .

$v$ = ______ $\text{m s}^{-1}$

(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.

$v$ = ______ $\pm$ ______ $\text{m s}^{-1}$

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5 more questions

Q2Kinematics · Work, Energy and Power13M
Q3Work, Energy and Power · Deformation of Solids · Dynamics12M
Q4Waves · Superposition11M
Q5Electricity · D.C. Circuits12M
Q6Particle Physics6M

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