Energy equivalent of 2 g of a substance is

Question

Energy equivalent of 2 g of a substance is (A) 18 × 1013 mJ (B) 18 × 1013 J (C) 9 × 1013 mJ (D) 9 × 1013 J

Tardigrade Admin · Accepted Answer

Energy, E=2 × 10-3 ×(3 × 108)2 J E=2 × 10-3 × 9 × 1016=18 × 1013 J Thus, if one gram of matter is converted to energy, there is a release of enormous amount of energy.

Q. Energy equivalent of $2 g$ of a substance is

$18 \times 1 0^{13} m J$

$18 \times 1 0^{13} J$

$9 \times 1 0^{13} m J$

$9 \times 1 0^{13} J$

Energy, $E = 2 \times 1 0^{- 3} \times (3 \times 1 0^{8})^{2} J$
$E = 2 \times 1 0^{- 3} \times 9 \times 1 0^{16} = 18 \times 1 0^{13} J$
Thus, if one gram of matter is converted to energy, there is a release of enormous amount of energy.

Q. Energy equivalent of 2g of a substance is

18×1013mJ

18×1013J

9×1013mJ

9×1013J