Energy, Work and Power

Efficiency

________: how much useful work is done with energy supplied.

Power

________: is the rate at which a machine transfers energy.

→Because work

________ done is equal to energy transferred, the power is also equal to the rate of doing work.

Energy

 amount of work and its measured in Joules (J)

Conservation of energy

energy cannot be created or destroyed, when work is done, energy is changed from one form to another

Efficiency

how much useful work is done with energy supplied

Renewable sources

Energy sources that are not exhaustible/ Infinite

Non-renewable sources

Energy sources that are exhaustible/ finite

Work

Work is done whenever a force acts on an object that moves (or is moving) in the direction of the force

Power

is the rate at which a machine transfers energy