Методичне забезпечення

Atomic mass unit - a unit of mass equal to of the mass of a neutral atom of carbon-12

Average - another word for mean

Average power - for sinusoidally varying voltages and currents the average power in a conductor is half the peak value

Average speed - the ratio of distance travelled to total time taken

Average velocity - the ratio of displacement to total time taken

Avogadro constant - the number of particles in one mole

Unpolarised - light whose electric field oscillates on many planes

Uniformly accelerated motion - motion with constant acceleration

Uniform motion - motion with constant velocity

Background radiation - radiation from natural sources