Theory

CH11 - TEMPERATURE

(a) A student states, quite wrongly, that temperature measures the amount of thermal energy (heat) in a body. State and explain two observations that...

2009 Winter

Theory

CH11 - TEMPERATURE

(a) Some gas, initially at a temperature of 27.2°C, is heated so that its temperature rises to 38.8°C. Calculate, in kelvin, to an appropriate...

2010 Summer

Theory

CH11 - TEMPERATURE

(a) The resistance of a thermistor at $0\,^{\circ}\text{C}$ is $3840\,\Omega$. At $100\,^{\circ}\text{C}$ the resistance is $190\,\Omega$. When the th...

2010 Summer

Theory

CH11 - TEMPERATURE

(a) The resistance of a thermistor at 0 °C is 3840 $\Omega$. At 100 °C the resistance is 190 $\Omega$. When the thermistor is placed in water ...

2010 Summer

Theory

CH11 - TEMPERATURE

(a) One assumption of the kinetic theory of gases is that gas molecules behave as if they are hard, elastic identical spheres. State two other assumpt...

2011 Winter

Theory

CH11 - TEMPERATURE

(a) One assumption of the kinetic theory of gases is that gas molecules behave as if they are hard, elastic identical spheres. State two other assump...

2011 Winter

Theory

CH11 - TEMPERATURE

(a) A resistance thermometer and a thermocouple thermometer are both used at the same time to measure the temperature of a water bath. Explain why, a...

2011 Winter

Theory

CH11 - TEMPERATURE

(a) Two metal spheres are in thermal equilibrium. State and explain what is meant by thermal equilibrium.   [2] (b) An electric water heat...

2012 Winter

Theory

CH11 - TEMPERATURE

A microwave cooker uses electromagnetic waves of frequency 2450MHz. The microwaves warm the food in the cooker by causing water molecules in the food ...

2014 Summer

Theory

CH11 - TEMPERATURE

(a) State what is meant by an $\textit{ideal gas}$.   [2] (b) The mean-square speed of the atoms of a fixed mass of an ideal gas at $32\, ^...

2015 Winter

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

Which unit can be expressed in base units as kg m^2 s^{-2}?

2019 Summer

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 and $\si...

2019 Summer

MCQ

CH2 - MEASUREMENT TECHNIQUES

A particle has velocity $V$ at an angle $\theta$ to the horizontal. The components of the particle’s velocity are $V_v$ upwards in the vertical dire...

2019 Summer

MCQ

CH14 - WAVES

A whale produces sound waves of frequency 5 Hz. The waves are detected by a microphone and displayed on an oscilloscope. What is the time-base sett...

2019 Summer

MCQ

CH2 - MEASUREMENT TECHNIQUES

The speed shown on a car's speedometer is proportional to the rate of rotation of the tyres. The variation of the diameter of a tyre as it wears intro...

2019 Summer

MCQ

CH3 - KINEMATICS

A car travels along a straight horizontal road. The graph shows the variation of the velocity $v$ of the car with time $t$ for 6.0 s of its journey. ...

2019 Summer

MCQ

CH3 - KINEMATICS

A stone is thrown horizontally from the top of a cliff and falls into the sea some time later. Air resistance is negligible. Which graph shows how th...

2019 Summer

MCQ

CH17 - ELECTRIC FIELDS

A positive charge of $2.6 \times 10^{-8} \text{ C}$ is in a uniform electric field of field strength $300000 \text{ Vm}^{-1}$. How much work must be ...

2019 Summer

MCQ

CH4 - DYNAMICS

Each diagram illustrates a pair of forces of equal magnitude. Which diagram gives an example of a pair of forces that is described by Newton's third ...

2019 Summer

MCQ

CH3 - KINEMATICS

A stone is dropped from a tall building. Air resistance is significant. The variation of distance fallen with time is shown by the dashed line. A sec...

2019 Summer