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Work - Energy - Heat Conversions
In physics, mechanical work is the amount of energy transferred by a force acting through a distance. Like energy, it is a scalar quantity, with SI units of joules. The term work was first coined in the 1830s by the French mathematician Gaspard-Gustave Coriolis. - Wikipedia

In physics, energy, from energos, "active, working" is a scalar physical quantity that describes the amount of work that can be performed by a force, an attribute of objects and systems that is subject to a conservation law. Eight different forms of energy exist to explain all known natural phenomena. These forms include (but are not limited to) kinetic, potential, thermal, gravitational, sound, light, elastic, and electromagnetic energy. The forms of energy are often named after a related force. - Wikipedia

In physics and thermodynamics, heat is the process of energy transfer from one body or system to another due to a difference in temperature. In thermodynamics, the quantity TdS is used as a representative measure of the (inexact) heat differential δQ, which is the absolute temperature of an object multiplied by the differential quantity of a system's entropy measured at the boundary of the object. - Wikipedia

Standard Unit = Joule (J)

  electron V kW*hour calorie joule ft*pounds ergs Btu
1 eV = 1 4.450 * 10-26 3.827 * 10-20 1.602 * 10-19 1.182 * 10-19 1.602 * 10-12 1.519 * 10-22
1 kWh = 2.247 * 1025 1 8.601 * 105 3.6 * 106 2.655 * 106 3.6 * 1013 3413
1 cal = 2.613 * 1019 1.163 * 10-6 1 4.186 3.087 4.186 * 107 3.968 * 10-3
1 J = 6.242 * 1018 2.778 * 10-7 0.2389 1 0.7376 107 9.481 * 10-4
1 ft*lb = 8.464 * 1018 3.776 * 10-7 0.3239 1.356 1 1.356 * 107 1.285 * 10-3
1 erg = 6.242 * 1011 2.778 * 10-14 2.389 * 10-8 10-7 7.376 * 10-8 1 9.481 * 10-11
1 Btu = 6.585 * 1021

 

 2.930 * 10-4 252.0 1055 777.9 1.055 * 1010 1

1 hp * hr = 2545 Btu
1 MeV = 106 eV		 1 kg = 8.987 * 1016 J
(from e=mc2)

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