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Total annual usage of energy by humankind is of the order of Terra Joules? true or false |
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Answer» "No, the total ANNUAL usage of the energy of energy by HUMANKIND is of the order of GigaJoules. A human consumes total 2000 Kcal of energy. 1Kcal = 4100 Joules that MEANS a human is consuming 4200 * 2000 = 8.4 * 10^6 joules of energy. The annual consumption on the conversion to the units; Kilo = 10³ mega = 10⁶ Giga = 10⁹ Terra = 10¹² peta = 10¹⁵ exa = 10¹⁸ Hence the answer is 3.066 GigaJoules " |
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