Glenn Elert
bent | chaos | eworld | facts | physics
The Physics Factbook™
Edited by Glenn Elert -- Written by his students
An educational, Fair Use website
topic index | author index | special index
The following units are acceptable for use in the "standardized result" column of your final submission.
| Quantity, Synonyms or Related Quantities |
SI Unit, Symbol |
Other Units, Symbol w/Notes |
|---|---|---|
| Acceleration |
m/s2 | g (multiples of 9.8 m/s2) |
| Angular Velocity (Angular Speed, Rate of Rotation) |
rad/s | rpm |
| Area |
m2 | - |
| Density |
kg/m3 | molecule/m3 |
| Electric Current (Amperage) |
amp, A (a.k.a. ampère) |
- |
| Electric Field |
V/m or N/C (identical units) |
- |
| Electric Potential (Electromotive Force, Potential Difference, Voltage) |
volt, V | - |
| Electrical Resisitivity (Reciprocal of Electrical Conductivity) |
Ω·m | - |
| Energy (Energy Density) |
joule, J | electron volt, eV J/kg (energy density) |
| Force (Lift, Tension, Weight, etc.) |
newton, N | - |
| Friction (Coefficient of Friction) |
- | - |
| Frequency |
hertz, Hz | - |
| Length (Altitude, Diameter, Distance, Size, Thickness, Wavelength) |
meter, m | light-year |
| Magnetic Field (Magnetic Flux Density, Magnetic Induction) |
tesla, T | Wb/m2 or N/Am (identical to tesla) |
| Mass |
kilogram, kg | solar masses atomic mass unit, amu |
| Money (Cost, Earnings, Income, Price, Salary, Worth) |
$US | $US/g, $US/kg, $US/L, $US/m3, $US/J, etc. |
| Number |
- | - |
| Power (Power Density) |
watt, W | W/m2 (power density) |
| Pressure |
pascal, Pa | atmosphere, atm |
| Refraction (Index of Refraction, Refractive Index) |
- | - |
| Temperature |
kelvin, K | degree celsius, °C |
| Time (Age, Half-life, Period) |
second, s | year, yr |
| Velocity (Speed) |
m/s | - |
| Volume |
m3 | liter, L |
The following prefixes may be used in conjunction with the acceptable units given above. The use of prefixes is preferred to the use of scientific notation in most cases.
| Multiples | Divisions | ||||
|---|---|---|---|---|---|
| SI Prefix | Symbol | Value | SI Prefix | Symbol | Value |
| kilo | k | 103 | milli | m | 10-3 |
| mega | M | 106 | micro | µ | 10-6 |
| giga | G | 109 | nano | n | 10-9 |
| tera | T | 1012 | pico | p | 10-12 |
| peta | P | 1015 | femto | f | 10-15 |
| exa | E | 1018 | atto | a | 10-18 |
Learn to use Google Calculator. Not only does it do conversions, but it can also do computations with mixed units and state the answer with the correct SI unit.
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