1. Effective Study 1.Review the material (mind map) 2.Talk physics (flash cards, focus) 3.Practise Questions (workbook or Exam) 4.Mark and correct (make notes) 5.Timing: 2.3 Waves (4 credits)1 hour 2.4 Mechanics (6 credits)1 hour 2.6 Electricity (5 credits)1 hour

2. Energy Mechanics Vectors have direction E 10° S Velocity Acceleration Adding vectors using Pythagoras Don’t forget the angle! 1 st : An object will travel at constant velocity unless acted on by an unbalanced resultant force Newton’s Laws of Motion 3 rd : Every action has an equal and opposite reaction 2 nd : Unbalanced resultant force leads to an acceleration F = ma Friction and air resistance opposes motion Torque (N m) τ = Fd Balance: Clockwise torques = anticlockwise torques Momentum (kg ms -1 ) p = mv Always conserved (unless acted upon by an unbalanced force) Impulse Δp = Ft Separate vertical and horizontal motion Circular Motion Centripetal force: caused by friction or tension or gravity Centripetal acceleration: due to a change in direction NOT speed

3. Mirrors & Lenses Waves Longitudinal and Transverse v = f λ, T=1/f Reflection Refraction: TAG AGA Diffraction, max if λ = gap longer λ get diffracted more Superposition & Interference Interference pattern Constructive (max amp) & destructive (min amp) Standing Waves Electromagnetic Spectrum Ray Diagrams Diverging Converging Total Internal Reflection at critical angle f is negative Di, Hi is negative f is positive Di, Hi is positive

4. Electricity Static Electricity Uniform Electric Field, E Electric potential energy, ΔE Force on a charge in an E-field Electromagnetism Force on a current carrying conductor in a B-field (motor effect) DC Motor Induced voltage generated across a conductor moving in a B-field & Generators Force on a charged particle in a B-field DC Electricity Series and Parallel circuit rules Current, I, Amps Voltage, V, Volts Resistance, R, Ohms Energy, E, Joules Power, P, Watts Ohm’s Law graphs (V/I)