## Physical Constants: Conversion Factors: Formulas:

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### Physical Constants: Conversion Factors: Formulas:

Physical Constants: Conversion Factors: Formulas:

Acceleration due to gravity g = 9.80665 m/s2
Avagadro's number NA = 6.022137 x 1023
Faraday Constant = F = 96,484 C mol-1 = 96,500
Masses of Subatomic Particles: electron me = 9.10939897 x 10-31 kg = 5.4857991 x 10-4 u
proton mp = 1.6726231 x 10-27 kg = 1.0072765 u
neutron mn = 1.6749286 x 10-27 kg = 1.0086649 u
Speed of Light c = 2.997925 x 108m/s
Proton Charge e = 1.60219 x 10-19 C
Atomic Mass Unit (amu or u) 1 u = 1.660540 x 10-27 kg
Foot (ft) 1 ft = 12 in = 0.3048 m
Pound (lb) 1 lb = 16 oz = 0.45359237 kg
gravitational potential energy U = m g h
kinetic energy K.E. = (1/2) m v2
circumference of a circle/sphere circ = 2 π r
cross-sectional area of a circle/sphere A = π r2
volume of a sphere V = (4/3) π r3
force on a charged particle in an electric field F = q E
mass defect E = ∆m c2