Eduqas A-Level Physics Oscillations and thermal physics overview quiz quiz

$a = -\omega x$

$a = \omega^2 x$

$a = -\omega^2 x^2$

$a = -\omega^2 x$

At the centre (equilibrium position)

At the extreme ends of the oscillating motion

It is exactly the same everywhere along the path

The speed of the oscillator is always zero throughout

Its length and the total mass of the swinging bob

Its length and the local value of g

The amplitude of the swing and the mass of the bob

Only the mass of the bob on the end of the string

The damping force acting on the system is at its maximum

The amplitude of the oscillation has fallen to zero

The driving frequency equals the natural frequency

The oscillation of the system is completely free of any driver

It raises and sharpens the peak

It has no effect on the peak

It removes the peak entirely at low frequencies

It lowers and broadens the peak

Molecules are in continuous random motion

Collisions between molecules are inelastic

Intermolecular forces act at all times

Molecules occupy most of the container volume

$\overline{E_k} = kT$

$\overline{E_k} = \frac{3}{2}kT$

$\overline{E_k} = \frac{1}{2}kT$

$\overline{E_k} = 3kT$

The heavy molecule has more kinetic energy

The light molecule has more kinetic energy

They have equal mean kinetic energy

It depends on the pressure

No thermal energy at all is being supplied to the substance

The mass of the substance steadily decreases as it melts

The specific heat capacity of the substance suddenly becomes zero during the melting process

The energy raises molecular potential energy by breaking bonds, not kinetic energy

$2.52 \times 10^{5}\ \text{J}$

$1.26 \times 10^{5}\ \text{J}$

$6.3 \times 10^{4}\ \text{J}$

$8400\ \text{J}$

It halves

It doubles

It stays the same

It quadruples

$pV = nRT$

$pV = \frac{1}{3}Nm\overline{c^2}$

$pV = NkT$

$pV = mc\Delta\theta$