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Author Question: Which of the following is true of the Universe when it was three minutes old? A) Photons ... (Read 33 times)

CBme

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on: Jul 27, 2018
Which of the following is true of the Universe when it was three minutes old?
 
  A) Photons continuously produced neutron-antineutron pairs.
  B) Protons and neutrons linked to form deuterium.
  C) Most nuclear reactions had stopped.
  D) Nuclear reactions had stopped completely.

Question 2

Which of the following is true of the cosmic microwave background?
 
  A) It is radiation that existed before the big bang.
  B) It appears to come from a blackbody.
  C) It is radiation present in the ultraviolet spectrum.
  D) It has a very small redshift of about 10.


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Silverbeard98

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

C

Answer to Question 2

B


CBme

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Reply 2 on: Jul 27, 2018
Excellent

Hdosisshsbshs

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Reply 3 on: Yesterday
Wow, this really help

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