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What is meant by 10 joules of energy?

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This was considered an advance because not only did it describe the rate at which energy would be expended to produce the desired unit of work, it could describe the stored or inherent ability of a substance to produce energy. As a schoolboy I had to grapple with converting Calories to Joules. read more

Imperial/Metric. Fahrenheit/Centigrade. In our history work was done by horses ridden, or guided by humans. Believe it or not, the average amount of work a horse could perform in a nominated time became a global standard called horsepower. read more

A rating of 500 joules should be fine for a computer in a house. For most office spaces this would also be good. If there is a lot of industrial equipment around, the rating should be higher. read more

(Units) the derived SI unit of work or energy; the work done when the point of application of a force of 1 newton is displaced through a distance of 1 metre in the direction of the force. 1 joule is equivalent to 1 watt-second, 10 7 ergs, 0.2390 calories, or 0.738 foot-pound. read more

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What is a Joule?
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What is joule?
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