Formula Flashcards
1
Q
work done
A
= force X distance
W = F s
2
Q
kinetic energy
A
= 0.5 X mass X speed²
KE = 1/2 m v²
3
Q
gravitational potential energy
A
=mass X gravitational field strength X height
GE = mgh
4
Q
power
A
= energy transferred/time
P = E/t
= work done/time
P = w/t
5
Q
efficiency of energy
A
=useful output energy transfer/total input energy transfer
6
Q
efficiency of power
A
=useful power output/ total power input
7
Q
energy transferred
A
= power X time
E = P t
8
Q
density
A
= mass/volume
p = m/v
9
Q
elastic potential energy
A
= 0.5 X spring constant X extension²
EPE = 1/2 k e²
10
Q
change in thermal energy
A
= mass X specific heat capacity X temperature change
∆E = mc ∆θ
11
Q
thermal energy for a change of state
A
= mass X specific latent heat
E= mL
