Energy Equations Flashcards
1
Q
elastic potential energy
A
0.5 x spring constant x (extension)^2
Ee = 1/2 k e^2
2
Q
kinetic energy
A
0.5 x mass x (speed)^2
Ek = 1/2 m v^2
3
Q
gravitational potential energy
A
mass x gravitational field strength x height
Ep = m g h
4
Q
change in thermal energy
A
mass x specific heat capacity x temperature change
5
Q
power
A
energy transferred/ time
work done/time
6
Q
efficiency
A
useful output energy transfer / total input energy transfer
useful power output / total power input
7
Q
weight
A
mass x gravitational field strength
8
Q
work done
A
force x distance
9
Q
force - in springs
A
spring constant x extention
10
Q
accelaration
A
change in velocity / time taken
11
Q
thermal energy required for a state change
A
mass x specific latent heat
12
Q
A
