gcse physics equation sheet
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33 Terms
kinetic energy
0.5 x mass x (speed)²
elastic potential energy
0.5 x spring constant x (extension)²
gravitational potential energy
gravitational field strength x height x mass
specific heat capacity
change in thermal energy = mass x SHC x temperature change
power, with energy transferred and time
energy transferred/time = power
power, with work done and time
work done/time = power
efficiency
useful output energy transferred/total input energy transfer = efficiency
charge flow
charge flow = current x time
potential difference
potential difference = current x resistance
power, with pd and current
power = current x pd
power, with current and resistance
power = (current)² x resistance
energy transferred, with power and time
energy transferred = power x time
energy transferred, with charge flow and pd
energy transferred = charge flow x potential difference
density
density = mass/volume
specific latent heat
thermal energy for a change of state = mass x specific latent heat
pressure in a gas
pressure x volume = constant
weight
weight = mass x gravitational field strength
work done, with force and distance
work done = force and distance
force, with spring constant and extension
force = spring constant x extension
moment of a force
moment = force x perpendicular distance from pivot
pressure
pressure = force normal to the surface /area of surface
pressure in a column of liquid
pressure in a column of liquid = height of column x density of liquid x gravitational field strength
distance travelled
distance = speed x time
acceleration
change in velocity/time taken = acceleration
velocity, final + initial
(final velocity)² - (initial velocity)² = 2 x acceleration x distance
resultant force
resultant force = mass x acceleration
momentum
momentum = mass x velocity
force, with change in momentum and time taken
force = change in momentum/time taken
period
period = 1/frequency
wave speed
wave speed = wavelength x frequency
magnification
image height/object heart = magnification
force on conductor carrying a current
magnetic flux density x current x length = force on conductor carrying a current
pd across primary coil in relation to turns
primary coil pd/secondary coil pd = primary coil turns/secondary coil turns