PLEASE NO LINKS! This is not multiple choice! A satellite with a mass of 600 kg is placed in orbit around an unknown planet. The radius of the orbit is 5 x 10^7 m and its period of rotation is 500 Earth days.
a)Calculate the orbital velocity.

b)Calculate the mass of the planet.

c)Calculate the gravitational force on the satellite.

d)If the satellite decreases its orbital radius, how would that change its orbital velocity?

Sally turns on her cellular telephone to speak to her friend who is located thousands of miles away. which of the following best describes how such a telephone is able to transmit and receive information? a. the cellular telephone transmits, receives, and encodes information using only sound waves. b. the cellular telephone transmits, receives, and encodes information using only electromagnetic waves. c. the cellular telephone transmits information by electromagnetic waves to a receiver which then encodes them and produces sound. d. the cellular telephone transmits information by sound waves to a receiver which then encodes them and produces electromagnetic waves.