A satellite of mass m and speed v moves in a stable, circular orbit around a planet of mass M. What is the radius of the satellites orbit?

Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?

The two required components for a generator are

On a geologic map, if the contacts between sedimentary rock units form a bull’s-eye pattern of concentric circles, with the youngest unit in the center, the underlying structure is a(n)