# Physics equations

### Description

Physics equations
Flashcards by inds12, updated more than 1 year ago
 Created by inds12 over 8 years ago
27
2

## Resource summary

 Question Answer Equation for average speed average speed= distance moved/ time taken Equation for force Force = mass x acceleration Acceleration= acceleration= change in velocity/ time taken Momentum = ? Momentum = mass x velocity Density = ? Density = mass / volume Work done = ? Work done = force x distance moved Work done = ? Energy transferred = work done Kinetic energy = ? kinetic energy = 1/2 x mass x speed2 GPE GPE = mass x g x height Weight = ? Weight= mass x gravitational field strength Pressure= ? Pressure = force/ area The relationship between movement of a force and it's distance from the pivot movement = force x perpendicular distance from the pivot charge = ? charge = current × time Voltage = ? Voltage = current x resistance electrical power= ? electrical power = voltage × current wave speed = ? wave speed = frequency × wavelength Relationship between voltage and turns input (primary) voltage / output(secondary)voltage = primary turns / secondary turns Refractive index = ? n= sin i / sin r angle of incidence / refraction Relationship between refractive index and critical angle sin c = 1 / n Efficiency = ? efficiency = useful energy output / total energy output Pressure difference pressure difference = height × density × g p=h×ρ×g Input power = ? input power = output power Vp Ip = Vs Is for 100% efficiency

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