Fundamental constants
The following table gives the values of the
majority of fundamental constants needed in a school Physics
course. The units for each are given together with the symbol for some.
| Avogadro mass unit |
|
932 MeV or 1.66x10-27 kg |
| Avogadro's number |
|
6.02x1023 mol-1 |
| Boltzmann's constant |
|
1.38x10-23 JK-1 |
| Electron charge |
|
1.602x10-19 C |
| Electron mass |
|
9.11x10-31 kg or 0.000 549 u |
| Energy conversions |
|
1 u = 1.66x10-27 kg = 1.492x10-10 J = 931 MeV |
| Mass of alpha particle |
|
4.001 506 u |
| Mass of helium atom |
|
4.002 603 u |
| Mass of proton |
|
1.007 276 u |
| Mass of neutron |
|
1.008 665 u |
| Mass of hydrogen (1H) atom |
|
1.007 825 u |
| Mean value of go for the Earth |
|
9.81 ms-2 |
| Molar gas constant |
|
8.31 mol-1K-1 |
| Permeability of free space (μo) |
|
4πx10-7 Hm-1 |
| Permittivity of free space (εo) |
|
8.85x10-12 Fm-1 |
| Planck's constant (h) |
|
6.63x10-34 Js |
| Specific charge of the electron (e/m) |
|
1.76x1011 Ckg-1 |
| Speed of electromagnetic radiation in free space |
|
2.997 925x108 ms-1 |
| Stefan's constant (σ) |
|
5.7x10-8 Wm2K-4 |
| Universal constant of gravitation (G) |
|
6.67x10-11 Nm2kg-2 |
