<TBODY>Name |
Symbol |
Value |
Gravitational constant |
G |
6.673x10-11 N*m2/kg2 |
Acceleration due to gravity |
g |
9.81 m/s2 |
Speed of light in a vacuum |
c |
2.998x108 m/sec |
Speed of sound at STP |
- |
3.31x102m/s |
Mass-energy relationship |
- |
1 amu = 9.315 x102MeV |
Mass of the Earth |
- |
5.97x1024kg |
Mass of the Moon |
- |
7.35x1022kg |
Mean radius of the earth |
- |
6.38 x106m |
Mean radius of the Moon |
- |
1.74 x106m |
Mean distance from Earth to Moon |
- |
3.84 x108m |
Electrostatic constant |
k |
8.988x109 N*m2/C2 |
Charge of the electron |
e |
1.602x10-19C |
One Coulomb |
C |
6.25 x1018 charges |
Electronvolt |
eV |
1.602x10-19J |
Planck's Constant |
h |
6.626 x10-34 J*s |
Rest mass of the electron |
me |
9.109 x10 -31kg |
Rest mass of the proton |
mp |
1.673 x10-27kg |
Rest mass of the neutron |
mn |
1.675x10-27 kg</TBODY> |
Atomic mass unit |
u |
1.661 x10-27 kg</TBODY> |
<TBODY>Absolute Indices of Refraction |
Wavelengths of Light in a Vacuum |
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<TBODY>Substance |
Index |
<TBODY>Color |
l (x10-7 m) |
Air |
1.00 |
Violet |
4.0-4.2 |
Alcohol |
1.36 |
Blue |
4.2-4.9 |
Diamond |
2.42 |
Green |
4.9-5.7 |
Glass,Crown/Flint |
1.52-1.61 |
Yellow |
5.7-5.9 |
Glycerol |
1.47 |
Orange |
5.9-6.5 |
Quartz, Fused |
1.46 |
Red |
6.5-7.0</TBODY> |
Water |
1.33</TBODY> |
</TBODY> |
Physics Equations
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Mechanics vaverage= Dd/Dt
Motion in a Plane
Energy W = FDd Internal Energy Q = mcDT
Nuclear Energy
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Symbols a = acceleration
Waves & Optics
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Electricity & Magnetism F=kq1q2/d2 Series Circuits It = I1=I2=I3=...
Parallel Circuits It=I1+I2+I3+...
Modern Physics
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Symbols B = flux density c=speed of light in a vacuum
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