Physical Quantities
From OSHKY Knowledge Library
This page is intended to be a quick reference for the different physical quantities and some common conversions CSHOs will need to know while performing their job duties.
Base Quantities
Base quantities are those quantities that cannot be defined by any other quantities. For example, length is a base quantity because length is composed of no other quantities. However, surface area is a quantity composed of two length measurements.
The first unit name given below is the International System of Units (SI)-preferred unit. Conversions will be listed to other common units.
| Quantity | SI Unit (Symbol) | Common Units | Conversion Factors |
|---|---|---|---|
| Length | meter (m) | inch (in)
foot (ft) mile (mi) |
1 m = 39.37 in
1 m = 3.28 ft 1 km = 0.62 mi |
| Mass | kilogram (kg) | pound (lb) | 1 kg = 2.2 lbs
1 g = 0.035 oz |
| Time | second (s) | hour (hr)
day (d) |
1 hr = 3,600 s
1 d = 86,400 s |
| Temperature | kelvin (K) | Celsius (°C)
Fahrenheit (°F) |
ΔK = Δ°C
°C = (°F-32) x 5/9 °F = (9/5) x °C+ 32 |
| Amount | mole (mol) | count | 1 mol = 6.022 x 10²³ |
| Electric Current | ampere (A) | ||
| Luminous Intensity | candela (cd) |
<math>\frac{5}{9}(°F-32)</math>
