energy transferred to where it is wanted when it is wanted

pattern of stationary waves on a string when it vibrates at its lowest possible frequency

a substance in which the number of charge carriers increases when the temperature is raised

the least distance between two adjacent vibrating particles with the same displacement and velocity at the same time

point at which the stress in a wire suddenly drops when the wire is subject to increasing strain

parallel bright and dark fringes observed when light from a narrow slit passes through two closely spaced slits

force * distance moved in the direction of the force

interaction between two leptons

force responsible for beta decay

the force of gravity acting on an object