Equations Flashcards
1
Q
Weight =
A
Mass x gravitational field strength
2
Q
Kinetic energy =
A
0.5 x mass x (speed)2
1/2 m v2
3
Q
Gravitational potential energy=
A
Mass x gravitational field strength x height
Ep = m g h
4
Q
Power =
A
Energy transferred / time
E/t
5
Q
Power =
A
Work done / time
W/t
6
Q
Efficiency =
A
Useful output energy transfer/ total input energy transfer
7
Q
Efficiency=
A
Useful power output / total power input
8
Q
Charge flow=
A
Current x time
Q= It
9
Q
Potential difference=
A
Current x resistance
V= IR
10
Q
Density=
A
Mass / volume
m/ V
