Equations Flashcards
1
Q
Kinetic Energy
A
Kinetic Energy = 0.5 x mass x speed squared
2
Q
Gravitational Potential Energy
A
GPE = mass x gravitational field strength x height
3
Q
Power (two equations)
A
- work done / time taken
- energy transferred / time taken
4
Q
Efficiency
A
Efficiency = useful energy output / total energy input Efficiency = useful power output / total power input
5
Q
Charge flow
A
Charge flow = current x time
Q = It
6
Q
Potential difference
A
Potential difference = current x resistance
7
Q
Total resistance
A
Resistance of component 1 + resistance of component 2
8
Q
Power
A
Current x Potential difference
9
Q
Power (squared one)
A
(Current) squared x resistance
10
Q
Energy transferred (2 equations)
A
- power x time
- charge flow x potential difference
11
Q
Density
A
Density = mass / volume
