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How much energy is required for a body of mass 1000 kg to escape from the earth? (g = 9.8 m/s^2 , R = 6400 km)

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How much energy is required for a body of mass 1000 kg to escape from the earth? (g = 9.8 m/s2 , R = 6400 km)

(a) about 3.2 × 1010 J

(b) about 6.4 × 1010 J

(c) about 6.4 × 106 J

(d) None of these

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Correct option: (b) about 6.4 × 1010 J

Explanation:

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