1. A certain satellite travels in an approximately circularorbit of radius 7.5 × 106 m with a period of 6 h 27 min.Calculate the mass of its planet from this information
2. (a) At what height above Earth's surface isthe energy required to lift a satellite to that height equal to thekinetic energy required for the satellite to be in orbit at thatheight? (b) For greater heights, which is greater,the energy for lifting or the kinetic energy for orbiting?
Please help:)
