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Author Question: The star HR 4621 has an apparent magnitude of 2.6 and an absolute magnitude of -0.3 . This star is ... (Read 80 times)

corkyiscool3328

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on: Jul 27, 2018
The star HR 4621 has an apparent magnitude of 2.6 and an absolute magnitude of -0.3 . This star is at a distance
 
  a. closer than 10 pc.
  b. farther than 10 pc.
  c. No way to tell.

Question 2

CCD stands for a
 
  a. photometer.
  b. charge-coupled device.
  c. spectrograph.
  d. core collapse device.
  e. grating.


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robbielu01

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

b

Answer to Question 2

b


corkyiscool3328

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Reply #2 on: Jul 27, 2018
Thanks


robbielu01

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


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