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Author Question: Astronomers can tell that the Sun moves at about _____. A) 225 km/s B) 240 km/s C) 265 km/s ... (Read 18 times)

SGallaher96

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on: Jul 27, 2018
Astronomers can tell that the Sun moves at about _____.
 
  A) 225 km/s
  B) 240 km/s
  C) 265 km/s
  D) 280 km/s

Question 2

Which of the following is true of the spiral density wave theory?
 
  A) It explains the formation of stars in self-sustaining star formation regions.
  B) It establishes that spiral arms are wound up by differential rotation.
  C) It does not account for the branches and spurs in spiral arms.
  D) It does not explain the spiral structure of spiral galaxies.


rosiehomeworddo

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Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

C


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