Equations Flashcards
1
Q
Energy :
Kinetic energy =
A
1/2 x mass x speed ^2
2
Q
Energy :
Gravitational potential energy =
A
GPE = mass x gravitational field strength x height
3
Q
Energy :
Power =
A
Power= work done/time taken = energy transferred/time taken
4
Q
Energy :
Efficiency =
A
= useful energy output / total energy input
= useful power output /total power input
5
Q
Electricity :
Charge flow =
A
= current x time
6
Q
Electricity :
Potential difference =
A
= current X resistance
7
Q
Electricity
Total resistance =
A
= resistance of component 1 + resistance of component 2
8
Q
Electricity
Power =
A
= current X potential difference
= (current)^2 X resistance
9
Q
Electricity
Energy transferred =
A
= power X time
= charge flow X potential difference
10
Q
Particle model
Density =
A
= mass / volume
