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equations

AQA GCSE

QuestionAnswer
kinetic energy 0.5 x mass x (speed)2
elastic potential energy 0.5 x spring constant x (extension)2
gravitational potential energy mass x gravitational field strength x height
change in thermal energy mass x specific heat capacity x temperature change
power energy transferred / time OR work done / time OR potential difference x current OR (current)2 x resistance
efficiency useful output energy transfer / total input energy transfer OR useful power output / total power input
charge flow current x time
potential difference current x resistance
energy transferred power x time OR charge flow x potential difference
density mass / volume
thermal energy for a change of state mass x specific latent heat
for gases: constant pressure x volume
weight mass x gravitational field strength
work done force x distance (along the line of action of the force)
force spring constant x extension OR change in momentum / time taken
moment of a force force x distance (normal to direction of force)
pressure force normal to a surface / area of that surface
pressure due to a column of liquid height of column x density of liquid x gravitational field strength
distance travelled speed x time
acceleration change in velocity / time taken
(final velocity)2 - (initial velocity)2 2 x acceleration x distance
resultant force mass x acceleration
momentum mass x velocity
period 1 / frequency
wave speed frequency x wavelength
magnification image object / object height
force on a conductor (at right angles to a magnetic field) carrying a current magnetic flux density x current x length
potential difference across primary coil / potential difference across secondary coil number of turns in primary coil / number of turns in a secondary coil
potential difference across primary coil x current in primary coil potential difference across secondary coil x current in secondary coil
Created by: eshalbasharat
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