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  Physical Constants and Formula
 
 
     
 
Speed of light c  3.00 x 108  m/s
Gravitational constant 6.67 x 10-11 Nm2
Avogadro constant NA 6.02 x 1023 mol-1
Universal gas constant 8.31 J/molK
Mass-energy relation c2 8.99 x 1016 J/kg 
931.5 MeV/u
Permittivity constant e0 8.85 x 10-12 F/m
Permeability constant m0 1.26 x 10-6  H/m
Planck constant h 6.63 x 10-34 Js
Boltzmann constant k 1.38 x 10-23 J/K 
8.62 x 10-5 eV/K
Elementary charge e 1.60 x 10-19 C
Electron mass me 9.11 x 10-31 kg 
5.49 x 10-4  u
Proton mass mp 1.67 x 10-27 kg 
1.0073 u
Bohr radius rB 5.29 x 10-11 m
Bohr magneton mB 9.27 x 10-24 J/T  
5.79 x 10-5  eV/T
Nuclear magneton mN 5.05 x 10-27 J/T
Ratio of proton mass to electron mass mp/me 1840
Rydberg constant R 1.10 x 107 m-1
Electron magnetic moment me 9.28 x 10-24 J/T
Proton magnetic moment mp 1.41 x 10-26 J/T
 
     
     
     
     
     
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