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Author Question: Active galaxies are thought to have _______ in their centers. a. accretion disks b. massive ... (Read 161 times)

Yi-Chen

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on: Jul 27, 2018
Active galaxies are thought to have _______ in their centers.
 
  a. accretion disks
  b. massive black holes
  c. accretion disks and massive black holes
  d. the Local Group
  e. a cluster of galaxies

Question 2

For a star of Sun-like mass, what is the last stage of the nuclear fusion?
 
  a. Hydrogen to helium
  b. Helium to carbon and oxygen
  c. Carbon to magnesium
  d. Fusion goes all the way up to iron.


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juwms

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

c

Answer to Question 2

b


Yi-Chen

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


juwms

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


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