Equations Flashcards
1
Q
Kinetic energy
A
1/2 x mass x speed²
1/2mv²
2
Q
GPE (gravitational field strength)
A
mass x gravitational field strength x height
mgh
3
Q
Power (1)
A
work done/time taken
4
Q
Power (2)
A
energy transferred/time taken
5
Q
Efficiency (1)
A
useful energy output/total energy input
6
Q
Efficiency (2)
A
useful power output/total power input
7
Q
Charge flow
A
Current x time
Q=I x t
8
Q
Potential difference
A
Current x resistance
V=I x r
9
Q
Power (3)
A
Current x potential difference
P= I x V
10
Q
Power (4)
A
(current)² x resistance
11
Q
Energy transferred
A
Power x time
E=P x t
12
Q
Energy transferred
A
Charge flow x potential difference
E = Q x V
13
Q
Density
A
Mass/volume
14
Q
Wave speed
A
Frequency x wave length
15
Q
Weight
A
Mass x gravitational field strength
