A supernova explosion of a 2.49 x 10³1 kg star produces 1.04 × 1044 J of energy. a) How many kilograms of mass are converted to energy in the explosion? kg b) What is the ratio of mass destroyed to the original mass of the star?

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A: Given : m=3.18x10-28 kg v=1.25x108 m/s

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Q: . A cheetah weighing 375 N chases a gazelle at a speed of 34.9 m/s.

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