Equations Paper 1 Flashcards
1
Q
Units too
Kinetic energy
A
1/2mv^2
kg m/s
2
Q
Elastic potential energy
A
1/2ke^2
N/m m
3
Q
Gravitational Potential energy
A
mgh
kg N/kg m
4
Q
Energy
Power
A
W/t or E/t
s J
5
Q
Efficiency
A
Useful energy output/total energy input
Useful power output/Total power input
6
Q
Change in thermal energy
A
mCtemperature change
kg J/kg Celsius
7
Q
Charge flow
A
Q=I t
coulombs amp seconds
8
Q
Potential difference
A
V=I R
amps ohms
9
Q
Electricity
Power
A
P= I V
P= I^2 R
watts amps potential difference
10
Q
Energy transferred
A
E=P t
E=Q V
Joules watts time coulombs voltage
11
Q
Density
A
p=m/v
g/cm^3 kg cm^3
12
Q
Gas constant
A
pV=constant
Pascal cm^3
13
Q
A
