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A.M. – arithmetic mean. AP – arithmetic progression. arccos – inverse cosine function. arccosec – inverse cosecant function. (Also written as arccsc.) arccot – inverse cotangent function. arccsc – inverse cosecant function. (Also written as arccosec.) arcexc – inverse excosecant function. (Also written as arcexcsc, arcexcosec.)
Here the metric prefix 'kilo-' (symbol 'k') stands for a factor of 1000; thus, 1 km = 1000 m. The SI provides twenty-four metric prefixes that signify decimal powers ranging from 10 −30 to 10 30 , the most recent being adopted in 2022.
1 km 2 means one square kilometre, or the area of a square of 1000 m by 1000 m. In other words, an area of 1 000 000 square metres and not 1000 square metres . 2 Mm 3 means two cubic megametres , or the volume of two cubes of 1 000 000 m by 1 000 000 m by 1 000 000 m , i.e. 2 × 10 18 m 3 , and not 2 000 000 cubic metres ( 2 × 10 6 m 3 ).
A mathematical symbol is a figure or a combination of figures that is used to represent a mathematical object, an action on mathematical objects, a relation between mathematical objects, or for structuring the other symbols that occur in a formula. As formulas are entirely constituted with symbols of various types, many symbols are needed for ...
The solar flux unit is a unit of spectral irradiance equal to 10 −22 W⋅m −2 ⋅Hz −1 (100 yW⋅m −2 ⋅Hz −1). The nox (nx) is a unit of illuminance equal to 1 millilux (1 mlx). The nit (nt) is a unit of luminance equal to one candela per metre squared (1 cd⋅m −2). The lambert (L) is a unit of luminance equal to 10 4 /π cd⋅m ...
m −1: area: A: square metre: m 2: The units are (1 a = 100 m 2) and hectare (1 ha = 100 a) are used for agrarian areas. volume: V cubic metre: m 3: litre: L, l: 1 L = 1 dm 3: The capital L is preferred as the small l can be indistinguishable from the number 1 in some fonts. time, time interval, duration: t second: s
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 2: kilofarad per ...
The basic units of the metric system have always represented commonplace quantities or relationships in nature; even with modern refinements of definition and methodology. In cases where laboratory precision may not be required or available, or where approximations are good enough, the commonplace notions may suffice.