1. The problem statement, all variables and given/known data A satellite is in a circular orbit about the earth (M = 5.98 x 1024 kg). The period of the satellite is 7.12 x 104 s. What is the speed at which the satellite travels? 2. The attempt at a solution I used the equation: http://img171.imageshack.us/img171/7176/math062gg0.gif [Broken] Re-arranged it to isolate r: http://img74.imageshack.us/img74/9274/math065rr5.gif [Broken] After I got radii, i solved for velocity: http://img171.imageshack.us/img171/3975/math053pd6.gif [Broken] My answer: 1.26x10^7 m/s Teacher: Incorrect Note: The numbers in the equations are not the actual ones i used.