The atomic bomb that was dropped on Nagasaki in 1945 killed140,000 people, helpi

Question

The atomic bomb that was dropped on Nagasaki in 1945 killed140,000 people, helping to end World War II on the next day. It released energy equivalent tothat of 20,000 tons of TNT explosive. How much mass was converted to energy when thistook place? (1000 tons of TNT = 4.3 x 10^12 J) Incidentally, modern H-bombs have energyyields 1000 times as much! A) 1 g B) 10 g C) 100 g D) 1 kg The atomic bomb that was dropped on Nagasaki in 1945 killed140,000 people, helping to end World War II on the next day. It released energy equivalent tothat of 20,000 tons of TNT explosive. How much mass was converted to energy when thistook place? (1000 tons of TNT = 4.3 x 10^12 J) Incidentally, modern H-bombs have energyyields 1000 times as much! A) 1 g B) 10 g C) 100 g D) 1 kg

Explanation / Answer

energy E = 4.3*1012*20 = 8.6*1013 J =mc2 m = 1 g answer: A

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