Content to revise for the trial Physics exam - Projectile motion Centripetal force Parts of a motor and their function GPE especially distance from the planet UV catastrophe Charges through magnetic field Eddy currents, how they are formed Torque, application both in motors and spanners Time dilation, calculate relative mass Lenz’s, Malus, Wien’s and Faraday’s Laws Application of F=BIL Speed design Calculating threshold frequency Application of Young’s double slit experiment and application of equation Parallel circuit with equation, explain how it works Planck’s and Einstein contribution to EM radiation Orbital velocity and altitude calculations Gravity equation and Universal gravitational force Charges moving through electric fields Explain behaviour of magnets through coils Application of Lenz’s Law, change of flux through an area Explain photoelectric effect, which involves stopping voltage Application of Kepler’s third law, know how to derive equation How transformers can be improved, application of transformer equations Explain how spectra is produced, what do spectra inform us about stars (at least four features) Understanding back emf.