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ls J a physical constant or a conversion factor? |
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Answer» 'J' represents Joule's mechanical equivalent of heat. It is not a physical constant. its a conversion factor, i.e., 1 calorie = 4.18 Joules. It means 4.18 joules of energy and 1 calorie of heat are equivalent. Thus, amount of work (in J) is obtained from the quantity of heat (in cals) by multiplying the latter by 4018 and vice- versa. |
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