Equations Flashcards
1
Q
Kinetic energy
A
1/2 x mass x speed^2
2
Q
Gravitational potential energy
A
Mass x gravitational field strength x height
3
Q
Power
A
Work done/time taken = energy transferred/time taken
4
Q
Efficiency
A
Useful energy (power) output/total energy (power) input
5
Q
Elastic potential energy
A
0.5 x spring constant x extension^2
6
Q
Specific heat capacity
A
Change in thermal energy = mass x specific heat capacity x temperature change
7
Q
Charge
A
Current x time
8
Q
Potential difference (voltage)
A
Current x resistance
9
Q
Power
A
Current x potential difference
10
Q
Power
A
Current^2 x resistance
11
Q
Energy transferred
A
Power x time
12
Q
Energy transferred
A
Charge flow x potential difference
13
Q
Density
A
Mass/volume
14
Q
Energy for a change in state
A
Mass x specific heat capacity
15
Q
Wave speed
A
Frequency x wavelength
