If 3 kg of mass is converted into energy. Energy released by
9 × 108 J
9 × 1016 J
27 × 108 J
27 × 1016 J
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In a gas, 5 molecules have speed 150 m/s, 170 m/s, 170 m/s, 180 m/s, 190 m/s. ratio of Vrms to Vmean is nearly
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