A space station has a mass of 420,000 kg and is 400,000 m above the Earth's surface. Solve for the gravitational potential energy. Important constants: G = 6.67x10-11 Nm²/kg², Rearth-6.4x106 m, Mearth = 5.97x1024 kg A. -10x10¹3 J B. 2.5x10¹3 J C. -7.5x1013 J D. -5x10¹3 J

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