physics 0.0 / 5 PhysicsIGCSEAll boards Created by: Libby MooreCreated on: 11-05-13 12:37 Density formula? density= mass/volume 1 of 22 Pressure formula? Pressure= force/area 2 of 22 Pressure difference formula? pressure difference=height x density x gravity (10) 3 of 22 Equation for 'constant temperature'? P1 x V1 = P2 x V2 4 of 22 Electrical power equation? Electrical power= current x voltage 5 of 22 Energy transferred equation? Energy transferred = current x voltage x time 6 of 22 Charge formula? Charge = current x time 7 of 22 voltage and resistance formula? voltage = current x resistance 8 of 22 efficiency equation? efficiency = useful energy output/ total energy output 9 of 22 work done equation? work done = force x distance moved 10 of 22 kinetic energy formula? kinetic energy = 0.5 x mass x speed 11 of 22 G.P.E formula? G. P. E = mass x gravity(10) x height 12 of 22 work done formula? work done = force x distance moved 13 of 22 orbital speed formula? 2 x pi x orbital radius/ time period 14 of 22 speed formula? distance/time 15 of 22 acceleration formula? acceleration = change in velocity/ time 16 of 22 resultan force formula? resultant force = mass x acceleration 17 of 22 moment equation? moment = force x acceleration 18 of 22 weight formula? weight = mass x gravitational field strength 19 of 22 How to find refractive index? refractive index = speed of light in a vacuum/ speed of light in that material 20 of 22 What does snell's law say? refractive index= sin i / sin r 21 of 22 How to find critical angles using snell's law? sin c = 1/ n (refractive index 22 of 22

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