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Author Question: Astronomers can measure a star's mass in only certain cases. Which one of the following cases might ... (Read 93 times)

gonzo233

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on: Jul 27, 2018
Astronomers can measure a star's mass in only certain cases. Which one of the following cases might allow astronomers to measure a star's mass?
 
  A) We know the star's luminosity and distance. B) The star is of spectral type G.
  C) The star is a member of a binary star system. D) The star is of spectral type A.

Question 2

Increasing the temperature of a blackbody by a factor of 3 will increase its energy by a factor of
 
  A) 3. B) 6. C) 9. D) 12. E) 81.


jlaineee

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

C

Answer to Question 2

E


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gonzo233

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Reply #2 on: Jul 27, 2018
TY


jlaineee

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Reply #3 on: Jul 27, 2018
You're welcome


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