Theory

Ideal Gases

Sources of $\alpha$-particles are frequently found to contain traces of helium gas. A radioactive source emits $\alpha$-particles at a constant rate o...

2009 Summer

2

Theory

Ideal Gases

(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

1

Theory

Ideal Gases

(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

3

Theory

Ideal Gases

(a) State the basic assumptions of the kinetic theory of gases.   [4] (b) Use equations for the pressure of an ideal gas to deduce that the...

2010 Winter

3

Theory

Ideal Gases

(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

Ideal Gases

(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

1

Theory

Ideal Gases

The planet Mars may be considered to be an isolated sphere of diameter $6.79 \times 10^6 \text{ m}$ with its mass of $6.42 \times 10^{23} \text{ kg}$ ...

2011 Winter

2

Theory

Ideal Gases

(a) The kinetic theory of gases is based on some simplifying assumptions. The molecules of the gas are assumed to behave as hard elastic identical sp...

2012 Summer

Theory

Ideal Gases

(a) The kinetic theory of gases is based on some simplifying assumptions. The molecules of the gas are assumed to behave as hard elastic identical sph...

2012 Summer

4

Theory

Ideal Gases

An ideal gas has volume $V$ and pressure $p$. For this gas, the product $pV$ is given by the expression $pV = \frac{1}{3}Nm$ where $m$ is the mass of ...

2012 Winter

2

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

Which unit is not an SI base unit?

2023 Summer

4

MCQ

CH2 - MEASUREMENT TECHNIQUES

What is the best estimate of the number of atoms in a piece of metal of volume 50 cm$^3$?

2023 Summer

4

MCQ

CH2 - MEASUREMENT TECHNIQUES

A copper pipe has a true diameter of 42.03 mm.A builder measures the diameter of the pipe five times using digital calipers. The measurements are show...

2023 Summer

5

MCQ

CH3 - KINEMATICS

Two forces, each of 10 N, act at a point P, as shown. The angle between the directions of the forces is 120°. What is the magnitude of the result...

2023 Summer

4

MCQ

CH3 - KINEMATICS

One object moves directly from P to R. In a shorter time, a second object moves from P to Q to R. Which statement about the two objects is correct...

2023 Summer

4

MCQ

CH3 - KINEMATICS

A ball is kicked so that it has an initial velocity of 12 m s⁻¹ at an angle of 50° to horizontal ground. Assume that air resistance is neg...

2023 Summer

2

MCQ

CH4 - DYNAMICS

A camera drone of mass 1.20 kg hovers at a fixed point above the ground. The drone has four propellers. In a time of 1.00 s, each propeller pushes ...

2023 Summer

3

MCQ

CH4 - DYNAMICS

A box rests on the Earth, as shown. Newton’s third law describes how forces of the same type act in pairs. One of the forces of a pair is the w...

2023 Summer

4

MCQ

CH5 - FORCES, DENSITY & PRESSURE

A small ball is held at the surface of liquid oil in a container. The ball is released from rest and falls through the oil. The ball has velocity $v$....

2023 Summer

3

MCQ

CH4 - DYNAMICS

An object of mass $m$, moving at speed $u$ along a frictionless horizontal surface, collides head-on with a stationary object of mass $4m$. After t...

2023 Summer

2