A communication satellite is in a circular orbit around Earth. If the speed of the satellite is constant, the force
acting on the satellite
A. is zero.
B. is decreasing.
C. points toward the center of Earth at all times.
D. points in the direction that the satellite is moving.

Can anybody me with this? ? (picture included.)

The system is released from rest with the cable taut, and the homogeneous cylinder does not slip on the rough incline. determine the angular acceleration of the cylinder and the minimum coeffi cient s of friction for which the cylinder will not slip.

Abag of potato chips contains 2.00 l of air when it is sealed at sea level at a pressure of 1.00 atm and a temperature of 20.0 deg c. what will be the volume of the air in the bag if you take it with you, still sealed, to the mountains where the temperature is 7.00 deg c and atmospheric pressure is 70.0 kpa? assume that the bag behaves like a balloon and that the air in the bag is in thermal equilibrium with the outside air.