Physics 9702/23 — May/June 2015

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

questions

marks

minutes

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

Q1Physical Quantities and UnitsKinematicsFree sample

Answer all the questions in the spaces provided.

(a)

The distance between the Sun and the Earth is $1.5 \times 10^{11}\ \text{m}$ . State this distance in $\text{Gm}$ .

distance = ______ $\text{Gm}$

(b)

The distance from the centre of the Earth to a satellite above the equator is $42.3\ \text{Mm}$ . The radius of the Earth is $6380\ \text{km}$ .

A microwave signal is sent from a point on the Earth directly below the satellite.

Calculate the time taken for the microwave signal to travel to the satellite and back.

time = ______ $\text{s}$

(c)

The speed $v$ of a sound wave through a gas of density $\rho$ and pressure $P$ is given by

v = \sqrt{\frac{CP}{\rho}}

where $C$ is a constant.

Show that $C$ has no unit.

(d)

Underline all the scalar quantities in the list below.

(e)

A boat travels across a river in which the water is moving at a speed of $1.8\ \text{m s}^{-1}$ . The velocity vectors for the boat and the river water are shown to scale in Fig. 1.1.

Fig. 1.1

In still water the speed of the boat is $3.0\ \text{m s}^{-1}$ . The boat is directed at an angle of $60^{\circ}$ to the river bank.

(i)

On Fig. 1.1, draw a vector triangle or a scale diagram to show the resultant velocity of the boat.

(ii)

Determine the magnitude of the resultant velocity of the boat.

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

The rest of this paper

6 more questions

Q2Kinematics · Work, Energy and Power10M
Q3Work, Energy and Power · Dynamics7M
Q4Measurement Techniques · Deformation of Solids6M
Q5Electricity · D.C. Circuits10M
Q6Superposition · Waves11M
Q7Particle Physics · Physical Quantities and Units5M

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