click below
click below
Normal Size Small Size show me how
A level Physics 3.3
Definitions
Term | Definition |
---|---|
Work done (W) | work done = force x distance moved in the direction of force |
Conservation of Energy | The total energy of a closed system remains constant as energy cannot be created or destroyed (it can only be transferred into other forms) |
Power (P) | power = work done/ time |
Efficiency | The percentage of energy that is transferred usefully by a device. It is always less than 100% due to heat losses. |