Common Physical Constants

Common physical constants. The values included here are approximates that are sufficient for rough calculations and are accepted in many school examinations. You can follow the link of each constant which will lead to the the corresponding wikipedia entry, where you can study its definition and obtain the exact value.

Name Symbol Value
Speed of Light c 3.0×108ms1
Gravitational Acceleration g 9.8ms2
Gravitational Constant G 6.67×1011Nm2kg2
Density of Water ρw 1000kgm3
Specific Heat of Water cw 4200Jkg1K1
Elementary Charge e 1.6×1019C
Electron Rest Mass me 9.1×1031kg
Vacuum Permittivity ε0 8.854×1012Fm1
Avogadro Constant NA 6.02×1023mol1
Gas Constant R 8.314Jmol1K1
Planck Constant h 6.63×1034Js
Rydberg Constant R 1.097×107m1
Vacuum Permeability μ 4π×107TmA1
Boltzmann's Constant k 1.38×1023JK1

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