1.2 Units and Standards - University Physics Volume 1 _ OpenStax.pdf

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5/21/20201.2 Units and Standards - University Physics Volume 1 | OpenStaxLearning ObjectivesBy the end of this section, you will be able to:Describe how SI base units are defined.Describe how derived units are created from base units.Express quantities given in SI units using metric prefixes.
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5/21/20201.2 Units and Standards - University Physics Volume 1 | OpenStax2/10Figure 1.7Distances given in unknown units are maddeningly useless.Two major systems of units are used in the world:SI units(for the FrenchSystème International d’Unités), also known as themetric system, andEnglish units(also known as thecustomaryorimperial system). English units were historically used in nations once ruled by the British Empireand are still widely used in the United States. English units may also be referred to as thefoot–pound–second(fps) system, as opposed to thecentimeter–gram–second(cgs) system. You may also encounter the termSAE units, named after the Society of Automotive Engineers. Productssuch as fasteners and automotive tools (for example, wrenches) that are measured in inches rather than metric units are referred to asSAEfastenersorSAE wrenches

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International System of Units, SI prefix, Kilogram, University Physics Volume

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