4. Our sun rotates in a circular orbit about the center of the Milky Way galaxy. The radius of the orbit is 2.2 x 1020 m, and the angular speed of the sun is 1.1 x 10-15 rad/s. How long (in years) does it take for the sun to make one revolution around the center?

 

 

 

 

 

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This page last updated on January 11, 2020