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| The '''joule''' (J) is the ] unit of ] and work, and is defined as 1 ] ]<sup>2</sup> ]<sup>-2</sup> |
The '''joule''' (J) is the ] unit of ] and work, and is defined as 1 ] ]<sup>2</sup> ]<sup>-2</sup> = 1 ] ] = 1 ] ]. It is named in honour of the physicist ]. | ||
| The work required to lift 102 g (e.g. a small apple) for one metre is 1 joule. | |||
| See also ]. | See also ], ]. | ||
| ==== External link ==== | ==== External link ==== | ||
Revision as of 09:38, 7 February 2003
The joule (J) is the SI unit of energy and work, and is defined as 1 kg m s = 1 N m = 1 W s. It is named in honour of the physicist James Prescott Joule.
The work required to lift 102 g (e.g. a small apple) for one metre is 1 joule.
See also conversion of units, kWh.