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A star rotates around the Galactic center with the rotational speed of 200km/s at 25,000ly from the Galactic center One year and one light-year are 3× 10's and 9× 10¹5 m, respectively. The orbital period of the star around the Galactic center is Select one or more: a. 2 million years. b. 200 million years. c. 20 billion years.

A star rotates around the Galactic center with the rotational speed of 200km/s at 25,000ly from the Galactic center One year and one light-year are 3× 10's and 9× 10¹5 m, respectively. The orbital period of the star around the Galactic center is Select one or more: a. 2 million years. b. 200 million years. c. 20 billion years.

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
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A star rotates around the Galactic center with the rotational speed of 200km/s at 25,000ly from the Galactic center. One year and one light-year are 3 x 10's and 9x 1015 m, respectively. The orbital period of the star around the Galactic center is Select one or more: a. 2 million years. b. 200 million years. c. 20 billion years.
Transcribed Image Text:A star rotates around the Galactic center with the rotational speed of 200km/s at 25,000ly from the Galactic center. One year and one light-year are 3 x 10's and 9x 1015 m, respectively. The orbital period of the star around the Galactic center is Select one or more: a. 2 million years. b. 200 million years. c. 20 billion years.
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