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

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

When a force $F$ moves its point of application through a displacement $s$ in the direction of the force, the work $W$ done by the force is given by $...

2012 Summer

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

What is a possible unit for the product $VI$, where $V$ is the potential difference across a resistor and $I$ is the current through the same resistor...

2012 Summer

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

What is a reasonable estimate of the average kinetic energy of an athlete during a 100 m race that takes 10 s?

2012 Summer

MCQ

CH2 - MEASUREMENT TECHNIQUES

A light-meter measures the intensity $I$ of the light falling on it. Theory suggests that $I$ varies inversely as the square of the distance $d$. W...

2012 Summer

MCQ

CH2 - MEASUREMENT TECHNIQUES

In an experiment, a radio-controlled car takes $2.50 \pm 0.05$ s to travel $40.0 \pm 0.1$ m. What is the car’s average speed and the uncertaint...

2012 Summer

MCQ

CH3 - KINEMATICS

In an experiment to determine the acceleration of free fall using a falling body, what would lead to a value that is too large?

2012 Summer

MCQ

CH3 - KINEMATICS

Which feature of a graph allows acceleration to be determined?

2012 Summer

MCQ

CH3 - KINEMATICS

The diagram shows a laboratory experiment in which a feather falls from rest in a long evacuated vertical tube of length $L$. The feather takes tim...

2012 Summer

MCQ

CH3 - KINEMATICS

In the absence of air resistance, a stone is thrown from P and follows a parabolic path in which the highest point reached is T. The stone reaches poi...

2012 Summer

MCQ

CH5 - FORCES, DENSITY & PRESSURE

Each option gives a correct word equation involving force. Which option gives the definition of force?

2012 Summer