Physics 9702/21 — May/June 2023

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

questions

marks

minutes

Topics Physical Quantities and Units · Dynamics · Work, Energy and Power · Forces, Density and Pressure · Electricity · Deformation of Solids · +5 more

Q1Work, Energy and PowerPhysical Quantities and UnitsFree sample

(a)

(i)

Define power.

(ii)

Use the definition of power to show that the SI base units of power are $\text{kg m}^2\ \text{s}^{-3}$ .

(b)

The intensity $I$ of a sound wave moving through a gas is given by

I = f^2 A^2 v k

where $f$ is the frequency of the wave,
$A$ is the amplitude of the wave,
$v$ is the speed of the wave
and $k$ is a constant that depends on the gas.

Determine the SI base units of $k$ .

SI base units = ______

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7 more questions

Q2Physical Quantities and Units · Forces, Density and Pressure · Dynamics · Deformation of Solids · Work, Energy and Power · Kinematics14M
Q3Dynamics6M
Q4Forces, Density and Pressure8M
Q5Waves · Superposition9M
Q6Physical Quantities and Units · Electricity4M
Q7D.C. Circuits · Electricity9M
Q8Particle Physics · Dynamics5M

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