Theory

CH12 - THERMAL PROPERTIES OF MATERIALS

When a liquid is boiling, thermal energy must be supplied in order to maintain a constant temperature. (a) State two processes for which thermal ener...

2009 Summer

Theory

CH12 - THERMAL PROPERTIES OF MATERIALS

(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

CH12 - THERMAL PROPERTIES OF MATERIALS

(a) State what is meant by the internal energy of a gas. (b) The first law of thermodynamics may be represented by the equation $$\Delta U = q + w.$...

2009 Winter

Theory

CH12 - THERMAL PROPERTIES OF MATERIALS

(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

CH12 - THERMAL PROPERTIES OF MATERIALS

(a) (i) State the basic assumption of the kinetic theory of gases that leads to the conclusion that the potential energy between the atoms of an ideal...

2010 Winter

Theory

CH12 - THERMAL PROPERTIES OF MATERIALS

(a) The first law of thermodynamics may be expressed in the form $$\Delta U = q + w.$$ Explain the symbols in this expression.  [3] + $\Delta...

2011 Summer

Theory

CH12 - THERMAL PROPERTIES OF MATERIALS

(a) The first law of thermodynamics may be expressed in the form $\Delta U = q + w$. Explain the symbols in this expression.  [3] + $\Delta U...

2011 Summer

Theory

CH12 - THERMAL PROPERTIES OF MATERIALS

(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

CH12 - THERMAL PROPERTIES OF MATERIALS

(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

CH12 - THERMAL PROPERTIES OF MATERIALS

(a) Define specific latent heat.  [2] (b) The heater in an electric kettle has a power of 2.40 kW. When the water in the kettle is boiling at a...

2012 Summer

Theory

CH1 - PHYSICAL QUANTITIES & UNITS

(a) State what is meant by a $\text{scalar}$ quantity and by a $\text{vector}$ quantity. [2] (b) Complete Fig. 1.1 to indicate whether each of t...

2018 Summer

Theory

CH3 - KINEMATICS

(a) State what is meant by the mass of a body. [1] (b) Two blocks travel directly towards each other along a horizontal, frictionless surface. T...

2018 Summer

Theory

CH14 - WAVES

(a) For a progressive wave, state what is meant by (i) the period,   [1] (ii) the wavelength.   [1] (b) Fig. 4.1 shows the vari...

2018 Summer

Theory

CH14 - WAVES

(a) When monochromatic light is incident normally on a diffraction grating, the emergent light waves have been diffracted and are coherent. Explain w...

2018 Summer

Theory

CH19 - CURRENT OF ELECTRICITY

(a) Define the volt............................................................................................................... [1](b) A battery of...

2018 Summer

Theory

CH17 - ELECTRIC FIELDS

A $\beta^{-}$ particle from a radioactive source is travelling in a vacuum with kinetic energy 460 eV. The particle enters a uniform electric field at...

2018 Summer

Theory

CH1 - PHYSICAL QUANTITIES & UNITS

(a) Define force. .....................................................................................................................[1] (b) State...

2018 Summer

Theory

CH3 - KINEMATICS

(a) State the principle of conservation of momentum. [2] (b) A stationary firework explodes into three different fragments that move in a horizontal ...

2018 Summer

Theory

CH3 - KINEMATICS

A child on a sledge slides down a steep hill and then travels in a straight line up an ice-covered slope, as illustrated in Fig. 3.1. The sledge pa...

2018 Summer

Theory

CH14 - WAVES

(a) (i) Define the wavelength of a progressive wave.   [1] (ii) State what is meant by an antinode of a stationary wave.   [1] (...

2018 Summer