A satellite in Earth orbit has a mass of 92 kg and is at an altitude of 2.04 106 m. (Assume that U = 0 as r ? infinity.) (a) What is the potential energy of the satellite–Earth system? J (b) What is the magnitude of the gravitational force exerted by the Earth on the satellite? N (c) What force, if any, does the satellite exert on the Earth? (Enter the magnitude of the force, if there is no force enter 0.) N