|
VALUES OF PHYSICAL QUANTITIES AND CONSTANTS |
FUNDAMENTAL CONSTANTS
|
speed of light |
c |
3.00´108 |
m.s-1 |
|
electron charge |
e, qe |
1.602´10-19 |
C |
|
electron mass |
me |
9.109´10-31 |
kg |
|
proton mass |
mp |
1.6726´10-27 |
kg |
|
neutron mass |
mn |
1.6749´10-27 |
kg |
|
atomic mass unit (amu) |
u |
1.6605x10-27 |
kg |
|
Planck’s constant |
h |
6.626´10-34 |
J.s |
|
permittivity of free space |
e0 |
8.85x10-12 |
C2.N-1.m-2 |
|
Coulomb constant |
|
8.85x10-12 |
C2.N.m-2 |
|
permeability of free space |
m0 |
4px10-7 |
T.m.A-1 |
|
magnetic force constant |
|
2.0´10-7 |
N.A-2 |
|
acceleration due to gravity |
g |
9.81 |
m.s-2 |
|
Gravitational constant |
G |
6.67x10-11 |
N.m2.kg-2 |
|
Avogadro’s number |
NA |
6.02x1023 |
mol-1 |
|
Boltzmann’s constant |
k |
1.38x10-23 |
J.K-1 |
|
Universal gas constant |
R |
8.315 |
J.mol-1.K-1 |
|
Stefan-Boltzmann constant |
s |
5.67x10-8 |
W.m-2.K-4 |
|
Rydberg constant |
R |
1.0974x107 |
m-1 |
USEFUL DATA
|
absolute zero |
|
0 K |
-273.15 oC |
|
Earth’s mass |
ME |
5.97x1024 |
kg |
|
Earth’s radius |
RE |
6.38x106 |
m |
|
Moon’s mass |
Mm |
7.35x1022 |
kg |
|
Moon’s radius |
RM |
1.74x106 |
m |
|
Sun’s mass |
MS |
1.99x1030 |
kg |
|
Sun’s radius |
RS |
6.96x108 |
m |
|
Distance: Earth – Sun |
RES |
1.496x1011 |
m |
|
Distance: Earth – Moon |
REM |
3.84x108 |
m |