P1 - Energy stores / P2 - Energy transfer by heating Flashcards
Definitions
1
Q
Efficiency
A
The ratio of useful output energy transferred to total energy input
2
Q
Elastic potential energy
A
The store of energy that stretched or compressed object experiences
3
Q
Joule
A
Unit for energy
4
Q
Power
A
The rate at which energy is transferred, or at which work is done
5
Q
Specific heat capacity
A
The amount of energy required to raise the temperature of a 1kg substance by 1°C
6
Q
Spring constant
A
A measure of a spring’s stiffness.
7
Q
Waste energy
A
Energy that isn’t usefully used for the purpose of a system
8
Q
Watt
A
A unit of power. One watt is equivalent to one joule of work being done in one second
9
Q
Work done
A
Th energy transferred when a force acts over a distance
