Energy? Flashcards
1
Q
How to calculate efficiency?
A
(Useful energy out divided by total energy in) x 100
2
Q
Gravitational potential energy
GPE?
A
Gravitational potential energy = mass x gravity x height
GPE = m x g x h
3
Q
Kinetic energy?
KE
A
Kinetic energy = 0.5 x mass x velocity squared
KE= 1/2mv(2)
4
Q
Work done?
W?
A
Work done = force x distance
W= f x d
5
Q
Another equation for work done?
A
Work done = energy transferred
6
Q
Power?
P
A
Power = energy divided by time
P=E/t
7
Q
Energy?
A
Specific heat capacity x mass x change in temperature
E= c x m x Ø
