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These
units are products of powers of base units.
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For
example:
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force newton N kg . m . s-2
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energy joule J N . m kg
. m2 . s-2
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power watt W J/s kg
. m2 . s-3
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emf volt V W/A kg
. m2 . s-3 . A-1
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resistance ohm Ω V/A kg
. m2 . s-3 . A-2
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absorbed
dose gray Gy J/kg m2 . s-2
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