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Force between two 1 meter long conductors, 1 meter apart by an outdated definition of one ampere: 10 −6 micronewton (μN) 1–150 μN Output of FEEP ion thrusters used in NASA's Laser Interferometer Space Antenna [11] 10 −4 10 −3 millinewton (mN) 2-4 mN EQUULEUS § Propulsion: 10 −2: 19-92 mN
The newton-metre or newton-meter (also non-hyphenated, newton metre or newton meter; symbol N⋅m [1] or N m [1]) [a] is the unit of torque (also called moment) in the International System of Units (SI). One newton-metre is equal to the torque resulting from a force of one newton applied perpendicularly to the end of a moment arm that is one ...
≡ m e ⋅α 2 ⋅c 2 (= 2 Ry) ≈ 4.359 744 × 10 −18 J: horsepower-hour: hp⋅h ≡ 1 hp × 1 h = 2.684 519 537 696 172 792 × 10 6 J: inch-pound force: in lbf ≡ g 0 × 1 lb × 1 in = 0.112 984 829 027 6167 J: joule (SI unit) J The work done when a force of one newton moves the point of its application a distance of one metre in the ...
Conversion of units is the conversion of the unit of measurement in which a quantity is expressed, typically through a multiplicative conversion factor that changes the unit without changing the quantity. This is also often loosely taken to include replacement of a quantity with a corresponding quantity that describes the same physical property.
The conversion between different SI units for one and the same physical quantity is always through a power of ten. This is why the SI (and metric systems more generally) are called decimal systems of measurement units. [10] The grouping formed by a prefix symbol attached to a unit symbol (e.g. ' km ', ' cm ') constitutes a new inseparable unit ...
The nanometre (SI symbol: nm) is a unit of length in the metric system equal to 10 −9 metres ( 1 / 1 000 000 000 m = 0. 000 000 001 m). To help compare different orders of magnitude , this section lists lengths between 10 −9 and 10 −8 m (1 nm and 10 nm).
The first group of metric units are those that are at present defined as units within the International System of Units (SI). In its most restrictive interpretation, this is what may be meant when the term metric unit is used. The unit one (1) is the unit of a quantity of dimension one. It is the neutral element of any system of units. [2]
A unit of measurement, or unit of measure, is a definite magnitude of a quantity, defined and adopted by convention or by law, that is used as a standard for measurement of the same kind of quantity. [1] Any other quantity of that kind can be expressed as a multiple of the unit of measurement. [2] For example, a length is a physical quantity.