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Asked in GUJCET 2020 · Mass defect and binding energy
Given: m=1 g=10⁻³ kg and c=3×10⁸ m s⁻¹.
Idea: mass and energy are equivalent, E=mc²; the mass must be in kilograms.
c²=(3×10⁸)²=9×10¹⁶ m² s⁻².
E=10⁻³×9×10¹⁶=9×10¹³ J.
One gram of any substance is worth 9×10¹³ J — the scale of energy a nuclear process draws on.
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