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Author Question: Absolute visual magnitude is the: A) apparent magnitude of a star observed from Earth. B) ... (Read 191 times)

washai

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on: Jul 27, 2018
Absolute visual magnitude is the:
 
  A) apparent magnitude of a star observed from Earth.
  B) luminosity of a star observed from a distance of 1000 pc.
  C) apparent magnitude of a star observed from a distance of 10 pc.
  D) luminosity of a star observed from Earth.

Question 2

Which of the following statements is true of the main sequence region of a Hertzsprung-Russell (H-R) diagram?
 
  A) It runs from the right edge of the diagram to the left edge.
  B) It includes only 10 percent of all normal stars.
  C) The hot main-sequence stars are more luminous than the cool main-sequence stars.
  D) The stars that are not on the main sequence have the same nuclear reactions as the main-sequence stars.


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nathang24

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

C

Answer to Question 2

C


washai

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


nathang24

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


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