1.

Total annual usage of energy by humankind is of the order of Terra Joules? true or false

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

"



Discussion

No Comment Found