Equations Flashcards
1
Q
KE
A
1/2mv^2
2
Q
GPE
A
mgh
3
Q
What links power and work done?
A
Power = Work done/time taken
4
Q
Efficiency
A
Useful output/ total input
5
Q
EPE
A
1/2ke^2
6
Q
Charge flow
A
Current x time Q=It
7
Q
Potential difference
A
Current x resistance V=Ir
8
Q
Total resistance
A
R=R1+R2
9
Q
What links power and potential difference?
A
Power = current x potential difference P=IV
10
Q
What links power and resistance?
A
Power = current^2 x resistance P=I^2R
11
Q
What links energy transferred and power?
A
Energy transferred = power x time E=pt
12
Q
What links energy transferred and charge flow?
A
Energy transferred = charge flow x potential E=QV
13
Q
Density
A
Mass ÷ volume
14
Q
How do you work out energy if you have the latent heat?
A
Energy = mass x latent heat
15
Q
Weight
A
Mass x gravity W=mg
