Discuss the below:
Q: Our sun rotates in a circular orbit about the center of the Milky Way galaxy. The radius of the orbit is 2.2 1020 m, and the angular speed of the sun is 1.2 10-15 rad/s.
(a) What is the tangential speed of the sun?
(b) How long (in years) does it take for the sun to make one revolution around the center?