Equations Flashcards
Work done equation
Work done = force X distance moved in the direction of the force
Energy transferred equation
Energy transferred = charge moved X potential difference
Power equation
Power= work done/time taken
Charge equation
Charge= current X time
Potential difference equation
Potential difference= current X resistance
Electrical power equation
Electrical power=current X potential difference
=current (squared) X resistance
Density equation
Density= mass/volume
Force exerted on a spring equation
Force exerted on a spring= spring constant X extension
Distance equation
Distance = speed X time
Acceleration equation
Acceleration = change in velocity/time taken
Force equation
Force=mass/acceleration
Weight equation
Weight=mass X gravitational field strength
Momentum equation
Momentum = mass X velocity
Change in GPE equation
Change in GPE=mass X GFS X change in vertical height
Kinetic energy equation
Kinetic energy =1/2 X mass X speed
Efficiency equation
Efficiency =Useful energy transferred by the device/total energy supplied to the device
Wave speed equation
Wave speed=frequency X wavelength
=distance/time
Change in velocity equation
(Final velocity)squared - (initial velocity)squared= 2 X acceleration X distance
Force equation
Force=change in momentum/time
Energy transferred equation
Energy transferred =current X potential difference X time
Change in thermal energy equation
Change in thermal energy=mass X specific heat capacity X change in temp
Thermal energy for a state of change equation
Thermal energy for a state of change= mass X specific latent heat
Energy transferred in stretching equation
Energy transferred in stretching=0.5 X spring constant X extension(squared)
Equation velocity (waves or air)
Velocity=frequency X wavelength
