Physical Constant table

Avogadro's Number                     N

 6.023 * 1023 mol-1          

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Universal Gas Constant                R 8.31 J K -1 per molecule

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1 AMU 1.6 * 10 -27 kg

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Binding energy per nucleon    931 Mev

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Rest Mass of proton                            mp 1.6 * 10 -27kg

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Rest Mass of electron                          me  9 * 10 -31 kg

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Rest Mass of Neutron                          mn  1.6749286*10-27 kg

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Rest Mass of proton in   amu                           mp 1.6 * 10 -27kg

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Rest Mass of electron in amu                          me  9 * 10 -31 kg

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Rest Mass of Neutron in amu                          mn  1.008664904 amu

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Rest Mass of Neutron in Mev                          mn  939.56541 Mev

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Rest Mass of proton in   Mev                           mp 938.27231Mev

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Rest Mass of electron in Mev                          me  0.5109906 Mev

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Mean Life of Free Neutron                              τn  881.5 Sec

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Mass of 1H1  1.00782505 amu

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Mass of 1H2  1.0070508885 amu

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Mass of 1H3  1.0053497592 amu

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Mass of 2He3  1.0053431064 amu

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Mass of 2He4  1.0006508135 amu

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Charge of electron                        e 1.6 * 10 -19 coloumb

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Rydberg's constant                       R 1.09678 * 10 7 m -1

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1 eV 1.6 * 10 -19 Joule

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1 kilo-watt-hour                          KWH 36 * 10 5 Joules

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1 Horse Power                            H.P 746 watts

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Universal Gravitational Constant    G 6.67 * 10 -11 Nm 2 kg -2

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Earth's radius                                 R 6.38*106 m

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Escape velocity from earth             Ve 11.2 kms/sec

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Acceleration due to gravity             g 9.98m/sec2

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Planck's constant                            h 6.62*10-34joule second

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Boltzman's constant                        k 1.38*10-23jk-1per molecule

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Mechanical equivalent of Heat        J 4.18 joules/cal

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Permittivity of free space               o 8.86*10-12C2N-1m-2

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Permeability of free space            o 410-7W/Amp.m

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Velocity of light in vacuum             c 3*108m/sec

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1 light year 9.46*1012km

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1 parsec 3.26 light years

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