Investigate the effects of the half-lifes of the isotopes of cobalt on the mass of a mystery lump of the element.

A look at a fluid mechanics technique called the Steady Flow Momentum Equation.

Show that even a very powerful spaceship would eventually run out of overtaking power

Dip your toe into the world of quantum mechanics by looking at the Schrodinger equation for hydrogen atoms

A think about the physics of a motorbike riding upside down

What is an AC voltage? How much power does an AC power source supply?

See how the motion of the simple pendulum is not-so-simple after all.

Look at the units in the expression for the energy levels of the electrons in a hydrogen atom according to the Bohr model.

How does the half-life of a drug affect the build up of medication in the body over time?

Explore the energy of this incredibly energetic particle which struck Earth on October 15th 1991

Investigate why the Lennard-Jones potential gives a good approximate explanation for the behaviour of atoms at close ranges

Things are roughened up and friction is now added to the approximate simple pendulum

A look at different crystal lattice structures, and how they relate to structural properties

Many physical constants are only known to a certain accuracy. Explore the numerical error bounds in the mass of water and its constituents.

A ball whooshes down a slide and hits another ball which flies off the slide horizontally as a projectile. How far does it go?

Investigate some of the issues raised by Geiger and Marsden's famous scattering experiment in which they fired alpha particles at a sheet of gold.

A series of activities to build up intuition on the mathematics of friction.

Follow in the steps of Newton and find the path that the earth follows around the sun.

This article, including exercises, gives a thorough grounding in the topic of AC/DC circuits.

Explore the mathematics behind the famous Wheatstone Bridge circuit.

As a capacitor discharges, its charge changes continuously. Find the differential equation governing this variation.

Find the equation from which to calculate the resistance of an infinite network of resistances.

Derive Euler's buckling formula from first principles.

A preview of some of the beam deflection mechanics you will look at in the first year of an engineering degree

Can you work out which of the equations models a bouncing bomb? Will you be able to hit the target?

Prove that you can make any type of logic gate using just NAND gates.

At what positions and speeds can the bomb be dropped to destroy the dam?

Put your complex numbers and calculus to the test with this impedance calculation.

Explore the relationship between resistance and temperature

Estimate these curious quantities sufficiently accurately that you can rank them in order of size

Investigate the mathematics behind blood buffers and derive the form of a titration curve.

Can you work out how to produce the right amount of chemical in a temperature-dependent reaction?

The probability that a passenger books a flight and does not turn up is 0.05. For an aeroplane with 400 seats how many tickets can be sold so that only 1% of flights are over-booked?

In this question we push the pH formula to its theoretical limits.

Explore the possibilities for reaction rates versus concentrations with this non-linear differential equation

Doug has just finished the first year of his undergraduate engineering course at Cambridge University. Here he gives his perspectives on engineering.

Think about the bond angles occurring in a simple tetrahedral molecule and ammonia.

Each week a company produces X units and sells p per cent of its stock. How should the company plan its warehouse space?

Given the graph of a supply network and the maximum capacity for flow in each section find the maximum flow across the network.

Find the distance of the shortest air route at an altitude of 6000 metres between London and Cape Town given the latitudes and longitudes. A simple application of scalar products of vectors.

Bricks are 20cm long and 10cm high. How high could an arch be built without mortar on a flat horizontal surface, to overhang by 1 metre? How big an overhang is it possible to make like this?