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(a) Determine the escape velocity from the Sun for an object at the Sun's surface (r = 7.5 × 105 km, M = 2.0 × 1030 kg).

(b) Determine the escape velocity from the Sun for an object at the average distance of the Earth (1.50 × 108 km).

(c) What is the ratio of the escape velocity in (b) to the speed of the Earth in its orbit?

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