叠 secure ! https://session.masteringphysics.com/myct/it Chapter 13 AssignmentExercise 13.21 Exercise 13.21 Two satellites are in circular orbits around a planet that has radius 9.00 × 100 m. One satellite has mass 81.0 kg orbital radius 8.20×107 m, and orbital speed 4800 m/s. The second satellite has mass 83.0 kg and orbital radius 5.10 107 m ere to search





