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However, the names of all SI mass units are based on gram, rather than on kilogram; thus 10 3 kg is a megagram (10 6 g), not a *kilokilogram. The tonne (t) is an SI-compatible unit of mass equal to a megagram (Mg), or 10 3 kg. The unit is in common use for masses above about 10 3 kg and is often used with SI prefixes.
In the metric system, a microgram or microgramme is a unit of mass equal to one millionth (1 × 10 −6) of a gram. The unit symbol is μg according to the International System of Units (SI); the recommended symbol in the United States and United Kingdom when communicating medical information is mcg .
of UCUM base units coulomb per square metre: C/m 2: electric displacement field, polarization density: m −2 ⋅C coulomb per cubic metre: C/m 3: electric charge density: m −3 ⋅C ampere per square metre: A/m 2: electric current density: m −2 ⋅s −1 ⋅C kilosiemens per metre: kS/m electrical conductivity: m −3 ⋅g −1 ⋅s 1 ⋅C ...
Mass; system unit unit-code symbol or abbrev. notes sample default conversion combinations SI: kilogram: kg kg 1.0 kg (2.2 lb) kg lb. kg lb st; kg st. kg st lb; gram: g g
The two alternatives are to abbreviate as "mcg" [14] [3] or to write out "microgram" in full (see also List of abbreviations used in medical prescriptions). The alternative abbreviation may be ambiguous in rare circumstances in that mcg could also be read as a micrigram , i.e. 10 −14 g; however the prefix micri is not standard, nor widely ...
Quantities, Units and Symbols in Physical Chemistry, also known as the Green Book, is a compilation of terms and symbols widely used in the field of physical chemistry. It also includes a table of physical constants , tables listing the properties of elementary particles , chemical elements , and nuclides , and information about conversion ...
The prefix symbols are always prepended to the symbol for the unit without any intervening space or punctuation. [9] This distinguishes a prefixed unit symbol from the product of unit symbols, for which a space or mid-height dot as separator is required. So, for instance, while 'ms' means millisecond, 'm s' or 'm·s' means metre-second.
Unit code Symbol US symbol Scale Extra Name Plural name US name US plural name Prefix Default Link cm/s2: cm/s 2: 0.01: centimetre per second squared: centimetres per second squared: centimeter per second squared: centimeters per second squared: ft/s2: Gal (unit) ft/s2: ft/s 2: 0.3048: foot per second squared: feet per second squared: m/s2 ...