Transcription of Practical Guide to the International System of Units (SI)
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Practical Guide to the International System of Units (SI)
Table 1 Prefixes Symbol Prefix Factor Y yotta 1024 Z zetta 1021 E exa 1018 P peta 1015 T tera 1012 G giga 109 M mega 106 k kilo 103 h hecto 102 da deka 101 100 = 1 d deci 10 1 c centi 10 2 m milli 10 3 ( micro 10 6 n nano 10 9 p pico 10 12 f femto 10 15 a atto 10 18 z zepto 10 21 y yocto 10 24 Table 2 SI Units Symbol unit Name Quantity (general symbol) Definition General Purpose m meter length (l) BASE unit kg kilogram mass (m) BASE unit s second time (t) BASE unit K kelvin temperature (T) BASE unit m square meter area (A) m m cubic meter volume (V) m N newton force (F) kg m/s J joule energy (E) N m W watt power (P) J/s Pa pascal pressure (p) N/m Hz hertz frequency 1/s Electromagnetic C coulomb charge (Q) A s 1018 e A ampere current (I) BASE unit = C/s V volt voltage (V) J/C = W/A)
2 1. Advantages and history The International System of Units, abbreviated SI, is the simplified modern version of the various metric systems.
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