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International System of Units (view source)
Revision as of 01:05, January 8, 2009
, 01:05, January 8, 2009→Joule
=== Work and Power ===
=== Work and Power ===
==== Joule ====
==== Joule ====
The '''joule''' (symbol J, named for [[James Joule]]) is that amount of [[energy]] required to do the ''work'' of exerting a force of one newton over a distance of one meter. To calculate, multiply force by distance, which reveals a joule is a Newton-meter or <math>N/m</math>. To expand further (keeping in mind a newton is a <math>kg(m/s^2)</math> ) a joule is a <math>kg/s^2</math>
The '''joule''' (symbol J, named for [[James Joule]]) is that amount of [[energy]] required to do the ''work'' of exerting a force of one newton over a distance of one meter. To calculate, multiply force by distance, which reveals a joule is a Newton-meter or <math>N/m</math>. To expand further (keeping in mind a newton is a <math>kg(m/s^2)</math> ) a joule is a <math>kg (m^2/s^2)</math>
==== Watt ====
==== Watt ====