weight - = mass × gravitational field strength, work done - = force × distance, distance travelled - = average speed × time, acceleration - = change in velocity / time taken, resultant force - = mass × acceleration, kinetic energy - = 0.5 × mass × speed2, gravitational potential energy - = mass × gravitational field strength × height, efficiency  - = Useful energy or power / Total energy or power, wave speed - = frequency × wavelength, charge flow - = current × time, potential difference - = current × resistance, electrical power - = voltage x current, density  - = mass / volume, pressure - = force / area, refractive index - = sin i / sin r, sin c - = 1 / n, pressure difference - = height x density x gravitational field strength, momentum - = mass x velocity, moment - = force x perpendicular distance from pivot, power of a transformer: VpIp - = VsIs, turns ration of a transformer: voltage / secondary voltage primary - = primary turns / secondary turns,

iGCSE Triple Science Physics word equations SST

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