Physics Equations 0.0 / 5 PhysicsEquations and FormulaeIGCSEEdexcel Created by: esumnerCreated on: 28-03-15 16:20 Refractive Index (n) = Sin i ÷ Sin r 1 of 15 Critical Angle (sin c) = 1 ÷ n (refractive index) 2 of 15 Angle of Incidence = Angle of Reflection 3 of 15 Efficiency = Useful Energy Output ÷ Total Energy Input 4 of 15 Work Done = Force x Distance Moved 5 of 15 Gravitational Potential Energy = Mass x g x Height 6 of 15 Kinetic Energy = 1/2 x Mass x Speed^2 7 of 15 Power = Work Done ÷ Time Taken 8 of 15 Density = Mass ÷ Volume 9 of 15 Pressure = Force ÷ Area 10 of 15 Pressure Difference = Height x Density x g 11 of 15 p1 ÷ T1 = (For Constant Volume) p2 ÷ T2 12 of 15 Constant = (For Constant Temperature) Pressure x Volume 13 of 15 Input (Primary) Voltage ÷ Output (Secondary) Voltage = No. of Turns on Primary Coil ÷ No. of Turns on Secondary Coil 14 of 15 Input Power = Output Power 15 of 15

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