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Author Question: Why is Newton's version of Kepler's third law so useful to astronomers? A) It allows us to ... (Read 61 times)

abc

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on: Jul 27, 2018
Why is Newton's version of Kepler's third law so useful to astronomers?
 
  A) It allows us to calculate distances to distant objects.
  B) It can be used to determine the masses of many distant objects.
  C) It tells us that more-distant planets orbit the Sun more slowly.
  D) It explains why objects spin faster when they shrink in size.

Question 2

Stellar parallax is the apparent
 
  A) shift in position of nearby stars as the Earth moves around the Sun
  B) westward motion of a planet with respect to the background stars
  C) shift in position of nearby stars as the Sun moves about the center of the galaxy
  D) shift in position of nearby stars as the Earth rotates on its axis


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Brummell1998

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

B

Answer to Question 2

A


abc

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Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

Liamb2179

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Reply 3 on: Yesterday
Excellent

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