# Physics

## Resources

Reference Table

Data analysis
• More about uncertainties in calculations

Further experiments and investigations
• Testing microwaves
• Experiments on polarised light
• Absorption of sound by materials
• Measurement of the speed of sound in a pipe
• Measurement of the wavelength of laser light using double slits
• Measurement of the focal length of a convex lens by measuring the image distance for different object distances
• Estimate of the size of an oil molecule
• Investigation of convection of air
• Measurement of the thermal conductivity of copper
• More on Measuring stress and strain
• Investigating motion
• An experiment to compare masses using the principle of conservation of momentum
• Experiment to calibrate a voltmeter
• More on Measuring the resistivity of a wire
• An experiment to measure the energy stored by a capacitor
• An experiment to investigate a multivibrator
• Investigation of the effect of a magnetic field on an electron beam
• Further investigations on flux changes using a data recorder
• Investigating self-inductance
• Measurement of the reactance of a coil
• Investigation of the spectrum of hydrogen
• Experiment to test the inverse square law for gamma radiation from a point source
• More about using a spectrometer
• Measurement of the viscosity of water
• Measurement of the viscosity of oil
• Experiment to measure the moment of inertia of a freely-rotating turntable

Further proofs
• Proof of the lens formula
• Proof that the centre of gravity of a uniform beam is at its midpoint

Exercises on essential mathematics
A) Algebra
• Symbols and equations in physics
• Using the dynamics equations
• Pythagoras theorem
• Simultaneous equations
B) Calculus
• Rates of change in dynamics
• Differentiation of xn and ex
• Rates of change in exponential decay
• Differentiating a sine function
C) Graphs
• Straight line graphs
• Inverse square law graphs
• Rates of change
• Area under a curve
D) Trigonometry
• Sin, cos and tan
• Sine wave formula
• Circular measures
E) Using a calculator
• Standard form and powers of ten
• Raising a number to a given power
• Using the ln key and the e key of a calculator
F) Vectors
• Resolving a vector
• i and j vectors

• Investigating motion using a spreadsheet
• Modelling capacitor discharge using a spreadsheet
• Modelling oscillating motion using a spreadsheet

Case studies
• The medical endoscope
• Liquid crystal displays (LCDs)