Term

Definition
weight = mass x gravitational field strength 


Term

Definition
work done = force x distance (along the line of action of the force) 


Term

Definition
Force applied to a spring = spring constant x extension 


Term

Definition
moment of a force = force x distance (normal to direction of force) 


Term

Definition
pressure = force (normal to a surface)/ area (of that surface) 


Term

Definition
distance travelled = speed x time 


Term

Definition
acceleration = change in velocity/time taken 


Term

Definition
resultant force = mass x acceleration 


Term

Definition
momentum = mass x velocity 


Term

Definition
kinetic energy = 0.5 x mass x (speed)^{2} 


Term

Definition
gravitational potential energy = mass x gravitational field strength (g) x height 


Term

Definition
power = energy transferred/time 


Term

Definition


Term
Efficiency  Energy transfer 

Definition
Efficiency = Useful output energy transfer/total input energy transfer 


Term

Definition
efficiency = useful power output/total power input 


Term

Definition
wave speed = frequency x wavelength 


Term

Definition
charge flow = current x time 


Term

Definition
potential difference = current x resistance 


Term

Definition
power = potential difference x current 


Term

Definition
power = (current)^{2} x resistance 


Term

Definition
energy transferred = power x time 


Term

Definition
energy transferred = charge flow x potential difference 


Term

Definition


Term

Definition
pressure due to a column of liquid = height of column x density of liquid x gravitational field strength (g) 


Term

Definition
(final velocity)^{2}  (initial velocity)^{2} = 2 x acceleration x distance 


Term

Definition
force = change in momentum/time taken 


Term

Definition
elastic potential energy = 0.5 x spring constant x (extension)^{2} 


Term

Definition
change in thermal energy = mass x specific heat capacity x temperature change 


Term

Definition


Term

Definition
magnification = image height/object height 


Term

Definition
force on a conductor (at right angles to a magnetic field) carrying a current = magnetic flux density x current x length 


Term

Definition
thermal energy for a change of state = mass x specific latent heat 


Term
V_{p}/V_{s} = n_{p}/n_{s} 

Definition
potential difference across primary coil/potential difference across secondary coil = number of turns in primary coil/number of turns in secondary coil 


Term

Definition
potential difference across primary coil x current in primary coil = potential difference across secondary coil x current in secondary coil 


Term

Definition
(For gases) constant = pressure x volume 

