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Author Question: How should we expect the Milky Way's interstellar medium to be different in 50 billion years than it ... (Read 121 times)

jilianpiloj

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How should we expect the Milky Way's interstellar medium to be different in 50 billion years than it is today?
 
  A) The total amount of gas will be about the same, but the percentage of elements heavier than hydrogen and helium will have risen from the current 2 to more than 50.
  B) The total amount of gas will be much greater, since many stars will undergo supernovae between now and then.
  C) The total amount of gas will be much less than it is today.
  D) Thanks to the recycling of the star-gas-star cycle, the interstellar medium should look about the same in 50 billion years as it does today.

Question 2

The energy of the photon depends on its ________.
 
  Fill in the blank(s) with correct word



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xiaomengxian

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Answer to Question 1

C

Answer to Question 2

frequency or wavelength.




jilianpiloj

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Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review


tranoy

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

 

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