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Physic- 17
What is Joules?
One joule is the amount of energy required to perform the following actions:
The work done by a force of one newton traveling through a distance of one meter;
The work required to move an electric charge of one coulomb through an electrical potential difference of one volt; or one coulomb volt, with the symbol C·V;
The work done to produce power of one watt continuously for one second; or one watt second (compare kilowatt hour), with the symbol W·s. Thus a kilowatt hour is 3,600,000 joules or 3.6 megajoules;
The kinetic energy of a 2 kg mass moving at a velocity of 1 m/s. The energy is linear in the mass but quadratic in the velocity, being given by E = ½mv²;
taken from: http://en.wikipedia.org/wiki/Joule
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