Physics Formulae Flashcards
1
Q
Young’s modulus
A
=stress/strain
2
Q
Stress
A
=force/area
3
Q
Strain
A
=extension/length
4
Q
Refractive index
A
=sin(i)/sin(r)=v1/v2
5
Q
Force
A
=change in momentum/time
6
Q
Impulse
A
=change in momentum
7
Q
Power
A
=energy/time=force*speed
8
Q
Hooke’s Law
A
force=spring constant*extension
9
Q
Elastic potential
A
=(force*extension^2)/2
10
Q
Resistivity
A
=(resistance*area)/length
11
Q
E.M.F.
A
=current(resistance+internal resistance)
12
Q
Angular speed
A
=speed/radius=2pi*frequency
13
Q
Gas law
A
(P1v1)/T1=(P2v2)/T2
14
Q
Kerchoff’s current law
A
Σcurrent in=Σcurrent out
15
Q
Kerchoff’s voltage law
A
Σvoltage rise=Σvoltage drop
