resistance - Ratio of the potential difference, V across the conductor to the current, I flowing through it., specific heat capacity - The amount of heat transferred to change the temperature of one kg of material by 1ºC or 1 K., impulse - change in momentum, energy - capacity to do work, work - product of force and displacement in the direction of force, power - the rate at which work is done, elasticity - the property of an object that enables it to return to its original shape and dimensions when an applied force is removed, specific latent heat - amount of heat required to change the phase of 1 kg of the substance at a constant temperature, amplitude - maximum displacement from its equilibrium position, period - time taken to complete an oscillation, diffraction - a phenomenon in which waves spread out as they pass through an aperture or round a small obstacle , interference - superposition of two waves originating from two coherent sources, electric field - a region within which electric force acts on a particle with an electric charge, electromotive force - a work done by a source in driving 1 coulomb of charge around a complete circuit, carbon dating - method use to determine the age of artefacts in the field of archaeology, transverse wave - a wave in which the vibration of particles in the medium is at right angles to the direction of the propagation of the wave, frequency - the number of complete oscillations made by a vibrating system in one second, wavelength - distance between two successive points one the same phase in a wave, electron gun - an assembly of cathode and anode in a vacuum tube to produce beam of fast moving electrons, radioactivity - the spontaneous disintegration of an unstable nucleus into a more stable nucleus with emission of energetic particles or photons,

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