Theory

CH11 - TEMPERATURE

(a) State what is meant by the internal energy of a system.   [2] (b) With reference to molecular kinetic and potential energies, describe ...

2024 Summer

5

Theory

CH11 - TEMPERATURE

(a) (i) State the magnitude and unit of absolute zero on the thermodynamic temperature scale.   [1] (ii) Explain why temperature measured u...

2024 Summer

5

Theory

CH11 - TEMPERATURE

(a) State the first law of thermodynamics. Identify the meaning of any symbols that you use.   [2] (b) The state of an ideal gas is continu...

2023 Summer

5

Theory

CH11 - TEMPERATURE

(a) State two of the basic assumptions of the kinetic theory of gases.  [2] (b) An ideal gas has amount of substance $n$. The gas is initially ...

2023 Summer

6

Theory

CH11 - TEMPERATURE

(a) State the reason why two objects that are at the same temperature are described as being in thermal equilibrium. (b) Figure 1 shows the variation...

2023 Summer

3

Theory

CH11 - TEMPERATURE

(a) Define specific latent heat of vaporisation.   [2] (b) The specific latent heat of vaporisation of water at atmospheric pressure of $1....

2022 Summer

5

Theory

CH11 - TEMPERATURE

Fig. 2.1 shows a laboratory thermometer that is calibrated to measure temperature in degrees Celsius. The thermometer makes use of the fact that th...

2022 Winter

2

Theory

CH11 - TEMPERATURE

An ideal gas has a volume of $3.1 \times 10^{-3} \text{m}^3$ at a pressure of $8.5 \times 10^5 \text{Pa}$ and a temperature of $290\text{K}$, as shown...

2021 Summer

3

Theory

CH11 - TEMPERATURE

(a) The first law of thermodynamics may be expressed as $\Delta U = (+q) + (+w)$ where $\Delta U$ is the increase in internal energy of the system. ...

2020 Winter

3

Theory

CH11 - TEMPERATURE

(a) State what is meant by the \textit{internal energy} of a system.   [2] (b) The atoms of an ideal gas occupy a container of volume $2.30...

2020 Winter

3

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

Which quantity with its unit is correct?

2016 Summer

2

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

The luminosity $L$ of a star is given by $L = 4\pi r^2 \sigma T^4$ where $r$ is the radius of the star, $T$ is the temperature of the star, $\sig...

2016 Summer

3

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

The diagram shows two vectors X and Y, drawn to scale. If X = Y − Z, which diagram best represents the vector Z?

2016 Summer

3

MCQ

CH2 - MEASUREMENT TECHNIQUES

The diagram shows a cathode-ray oscilloscope (c.r.o.) being used to measure the rate of rotation of a flywheel.The flywheel has a small magnet M mount...

2016 Summer

2

MCQ

CH2 - MEASUREMENT TECHNIQUES

A student determines the density $\rho$ of steel by taking measurements from a steel wire. mass $m = 6.2 \pm 0.1 \text{ g}$ length $l = 25.0 \pm 0.1 \...

2016 Summer

3

MCQ

CH3 - KINEMATICS

The acceleration of free fall on the Moon is $1.6 \, \text{m}\,\text{s}^{-2}$. The Moon has no atmosphere. An astronaut standing on the surface of the...

2016 Summer

2

MCQ

CH3 - KINEMATICS

A tennis ball is released from rest at the top of a tall building. Which graph best represents the variation with time $t$ of the acceleration $a$ of ...

2016 Summer

3

MCQ

CH3 - KINEMATICS

The graph shows how the velocity $v$ of an object moving in a straight line varies with time $t$ from $t = 0$ to $t = T$. Which graph represents th...

2016 Summer

3

MCQ

CH4 - DYNAMICS

A ball falls vertically onto horizontal ground and rebounds, as shown. The ball has momentum $p_1$ downwards just before hitting the ground. After ...

2016 Summer

3

MCQ

CH4 - DYNAMICS

A sphere falls from rest through the air. The graph shows the variation with time of the sphere’s velocity. Which diagram shows the forces ac...

2016 Summer

3