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An oscillation is damped if resistive forces are present e.g. air resistance or friction. The amplitude of the system will decrease over time, as opposed to a free oscillation which is undamped (no resistive...

The photoelectric effect is the emission of electrons from the surface of a metal due to exposure of electromagnetic radiation above a certain frequency. Photon energy (E=hf or E=hc/λ). The work function is ...

Matter and antimatter will annihilate if they meet: 1) Particle meets antiparticle. 2) Both have rest energies due to their masses. 3) Both have kinetic energies due to their movement (if they are moving). 4...

The Strong Nuclear Force keeps protons and neutrons together in the nucleus.Its range is no more than about 3-4 fentometres. It has equal effects between a proton-neutron, neutron-neutron and proton-proton c...

Newton's Second Law of Motion F=ma is very important because it shows the relationship between forces and motion. It allows you to calculate the acceleration (and therefore velocity and position) of an objec...