# Equations for physics in PDF

Some users had asked me to put the word to a pdf file so hope this helps

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• Created by: Braniac
• Created on: 30-12-11 18:03

First 194 words of the document:

AS PHYSICS EQUATIONS
Unit 1 Unit 2
¥
Mechanics v = u + at Waves
· Kinematic s = ut + ½at2 · Wave speed v=f
equations of v2 = u2 + 2as
motion F = ma · Refractive index µ = sin i/sin r = v1/v2
1 2
g = F/m Electricity
W = mg · Potential V = W /Q
· Forces
¡W = F ¡s difference
¡E
Ek= ½ mv ¡
= mg h
2 · Resistance
R = V/I
· Work and energy grav
· Electrical power,
Materials F=6 ¢£rv energy and
P = VI
P = I2R
F = k ¤x
· Stokes' law efficiency P = V2/R.
· Hooke's law W = VIt
% efficiency = [useful
= m/V energy (or power)
· Density
¦
output/total energy
p = F/A (or power) input]
· Pressure 100%
· Young's modulus E = / where
Stress = F/A
Strain = x/x¤ · Resistivity R= §l/A
I = ¤Q/ ¤t
· Elastic strain
energy Eel = ½ Fx
· Current
I = nqvA
Quantum physics
· Photon Model E = hf
· Einstein's
photoelectric
hf =
max
¨ + ½ mv 2
equation