Formulae and Laws

Forces and Motion

Hooke's Law:

You may also have to add atmospheric pressure to get the total pressure.

Energy and Power

Electric Circuits

for resistors in series

Charge= Voltage*Capacitance

Kirchoff's Laws

1 st Law: Current into a node equals current out.

2 nd Law  - The voltages sum around a circuit loop add to the supply voltage

Latent Heat

Energy to evaporate m kg of liquid=ml, l=Specific Latent Heat of Vapourization

Energy to melt m kg of liquid=ml, l=Specific Latent Heat of Fusion

Energy to heat m kg of a substance by T degrees =mcT, c=Specific Heat Capacity

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