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Author Question: You observe the same spectral line in two stars that are identical in every way except that one ... (Read 70 times)

Beheh

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on: Jul 27, 2018
You observe the same spectral line in two stars that are identical in every way except that one rotates faster than the other. How does the spectral line differ between the two?
 
  A) There is no difference.
  B) The line in the faster rotating star is blueshifted.
  C) The line in the faster rotating star is redshifted.
  D) The line in the faster rotating star is broader.
  E) The line in the faster rotating star is narrower.

Question 2

Why are the temperature fluctuations observed in the cosmic microwave background are important?
 
  What will be an ideal response?


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Koolkid240

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

D

Answer to Question 2

The angular scale of the fluctuations indicates that the density of the universe is very close to the critical density. The variations in temperature are consistent with dark matter models.


Beheh

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Reply #2 on: Jul 27, 2018
Thank you!


Koolkid240

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Reply #3 on: Jul 27, 2018
Always glad to help...


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