Equations Flashcards
1
Q
Acceleration
A
Change in velocity / Time taken
2
Q
Force
A
Mass x acceleration
3
Q
Weight
A
Mass x g
4
Q
Moment
A
Force x perpendicular distance from pivot
5
Q
Power
A
Current x voltage
6
Q
Voltage
A
Current x resistance
7
Q
Charge
A
Current x Time
8
Q
Wave speed
A
Frequency x wavelength
9
Q
Refractive index
A
Sin I / sin r
10
Q
Sin c
A
1/ refractive index
11
Q
Efficiency
A
Useful energy out / total energy In
12
Q
Work done
A
Force x distance moved
13
Q
Gravitational potential energy
A
Mass x g x height
14
Q
Kinetic energy
A
1/2 x mass x speed^2
15
Q
Density
A
Mass / volume
16
Q
Pressure
A
Force/area
17
Q
Pressure difference
A
Height x density x g
18
Q
Momentum
A
Mass x velocity
19
Q
Input (primary) voltage / output (secondary) voltage
A
Primary turns / secondary turns
20
Q
Input power
A
Output power
21
Q
Average speed
A
Distance travelled / Time taken
