Important Equations Flashcards
1
Q
Kinetic energy =
A
1/2 x mass × velocity^2
2
Q
Efficiency of energy transfer =
A
Useful energy output ÷ total energy input
3
Q
Power =
A
Energy transferred ÷ time
4
Q
Substance radiation =
A
Total radiation - background radiation
5
Q
Equation for average speed
A
Velocity = distance ÷ time
6
Q
Acceleration equation
A
Acceleration = change in velocity ÷ time taken
7
Q
Weight =
A
Mass x gravitational field strength
8
Q
The rate of change in momentum is equal to what?
A
Force
9
Q
Wave frequency =
A
Number of oscillations ÷ time
10
Q
Magnification of a lens =
A
magnification=image height÷object height
11
Q
Force =
A
Mass x acceleration
12
Q
GPE=
A
mass x gravity x height
13
Q
Momentum (P) =
A
Mass x velocity
14
Q
Wave velocity =
A
Frequency x wavelength
OR
Distance divided by time
