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APPENDIX IV

? LIST OF PHYSICAL CONSTANTS

Universal gravitational constant G= 6.67 x 10-11 N m2 kg-2
Acceleration due to gravity g= 9.80 m s –2
Radius of the Earth RE = 6380 km
Mass of the Earth ME = 5.98 x 10 24 kg
Mass of the Moon Mm = 7.35 x 10 22 kg Atmosphere
Atmosphere Atm = 1.00 x 105 N m-2
Boltzmann's constant k= 1.38 x 10-23 J K -1
Coulomb constant 9.00 x 109 N m2 C -2
Mass of the electron = 9.11 x 10 -31 kg
Electron charge me = 1.60 x 10 -19 C
Density of water e= 1.00 x 103 kg m -3
Resistivity of steel 1.98 x 10 -7 Om
Resistivity of copper = 1.80 x 10 -8 Om
=
=

Thermal conductivity of copper = 400 W m -1 K -1
Specific heat capacity of aluminium = 910 J kg -1 K-1
Specific heat capacity of copper = 387 J kg -1 K -1
Specific heat capacity of water = 4200 J kg -1 K -1
Specific latent heat of fusion of ice = 3.34 x 10 5 J kg-1
Specific latent heat of vaporisation of water = 2.26 x 106 J kg-1
Avogadro number NA = 6.02 x 10 23 per mole
Speed of light in free space c= 3.00 x 108 m s-1
Permeability of free space µ0 = 4p x 10-7 H m-1

CXC A16/U2/07v01 93