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Author Question: Doppler shifted hydrogen absorption lines are seen in the spectrum of a star. The hydrogen line at ... (Read 143 times)

Tirant22

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on: Jul 27, 2018
Doppler shifted hydrogen absorption lines are seen in the spectrum of a star. The hydrogen line at 656.28 nm is seen to be shifted to 656.08 nm.
 
  How fast is the star moving (Note: The speed of light is approximately 300,000 km/s, or 3  105 km/s.)?
  A) about 10,000 km/s B) about 1,000 km/s
  C) about 1,000,000 km/s D) about 100 km/s

Question 2

The chromosphere is the layer of the Sun that we see as its visible surface.
 
  Indicate whether the statement is true or false


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beccamahon

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

D

Answer to Question 2

FALSE


Tirant22

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Reply #2 on: Jul 27, 2018
Thanks


beccamahon

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Reply #3 on: Jul 27, 2018
Welcome :)


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