Can we define 1MW as:
When 1MJ (i.e. 1 megajoule) of work is done in unit time it is called 1MW (1 megawatt).
(Please answer in yes or no)
Answers
Explanation:
YES
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Explanation:
James Prescott Joule (1818 − 1889) was a self-educated British physicist
and brewer whose work in the midnineteenth century contributed to the establishment of the energy concept. The international unit of energy bears
his name:
1 Joule [J] = 1 Watt-second [Ws] = 1 V A s = 1 N m = 1 kg m2s−2.
It takes about 1 J to raise a 100-g-apple 1 m. Energy units can be preceded
by various factors, including the following:
kilo (k=103), Mega (M=106), Giga (G=109), Tera (T=1012), Peta (P=1015),
Exa (E=1018).
Thus, a kiloJoule (kJ) is 1000 Joules and a MegaJoule (MJ) is 1,000,000 Joules.
A related unit is the Watt, which is a unit of power (energy per unit time). Power units can be converted to energy units through multiplication by seconds [s], hours, [h], or years [yr].
For example, 1 kWh [kilowatt hour] = 3.6 MJ [MegaJoule]. With 1 kWh, about 10 liters of water can be heated from 20 ºC to the boiling point.
There are many other energy units besides the "Système International d'Unités (SI)". A "ton of coal equivalent" (tce) is frequently used in the energy business. 1 tce equals 8.141 MWh. It means that the combustion of 1 kg of coal produces the same amount of heat as electrical heating for one hour at a rate of 8.141 kW.