Edexcel IGCSE Physics – Equations
Questions and Answers
average speed = - answer distance/time
force = - answer mass x acceleration
acceleration = - answer change in velocity/time taken
momentum = - answer mass x velocity
density = - answer mass/volume
efficiency = - answer useful energy output/total energy input
work done = - answer force x distance moved in direction of force
energy transferred = - answer work done
kinetic energy = - answer 1/2 x mass x velocity2
GPE = - answer mgh
weight = - answer mass x gravitational field strength
pressure = - answer force/area
moment = - answer force x perpendicular distance from pivot
charge (Q) = - answer current (I) x time (t)
voltage (V) = - answer current (I) x resistance(r)
electrical power = - answer voltage (V) x current (I)
wave speed = - answer frequency x wavelength
input power = - answer output power
input (primary) voltage / output (secondary) voltage = - answer primary
turns/secondary turns
n (refractive index) = - answer sini/sinr
Questions and Answers
average speed = - answer distance/time
force = - answer mass x acceleration
acceleration = - answer change in velocity/time taken
momentum = - answer mass x velocity
density = - answer mass/volume
efficiency = - answer useful energy output/total energy input
work done = - answer force x distance moved in direction of force
energy transferred = - answer work done
kinetic energy = - answer 1/2 x mass x velocity2
GPE = - answer mgh
weight = - answer mass x gravitational field strength
pressure = - answer force/area
moment = - answer force x perpendicular distance from pivot
charge (Q) = - answer current (I) x time (t)
voltage (V) = - answer current (I) x resistance(r)
electrical power = - answer voltage (V) x current (I)
wave speed = - answer frequency x wavelength
input power = - answer output power
input (primary) voltage / output (secondary) voltage = - answer primary
turns/secondary turns
n (refractive index) = - answer sini/sinr
