1. The problem statement, all variables and given/known data GPS (Global Positioning System) satellites orbit at an altitude of 2.6×107 . Find the orbital period. Find the orbital speed of such a satellite. 2. Relevant equations I would like to know how to approach this. I don't know where to start w/o other figures. 3. The attempt at a solution I went through a long, convoluted process and determined 2.8*10^29, which is entirely wrong. Please help!! Thank you in advance!