9702/42 · May/June 2024

Radians, angular speed and centripetal acceleration of a point on a disc.

Thermal equilibrium, the ideal gas equation and r.m.s. speed.

Internal energy: kinetic and potential energy of molecules when heated or stretched.

Simple harmonic motion from an acceleration–displacement graph.

Electric potential of two charged spheres, and a proton moving in the field.

Capacitors in series and parallel, and the energy stored.

Flux, flux linkage and the induced e.m.f. from a changing field.

Redshift, photon energy, energy levels and Hubble’s law.

Mass defect, binding energy per nucleon and alpha decay.

Ultrasound imaging, acoustic impedance and reflection.