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Author Question: The hot gas of the big bang seems to be cool at about 2.7 K because: A) the expansion of the ... (Read 81 times)

B

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on: Jul 27, 2018
The hot gas of the big bang seems to be cool at about 2.7 K because:
 
  A) the expansion of the Universe has decreased the wavelengths of the radiation emitted by the big bang.
  B) the gas clouds that emitted the photons during the big bang had a temperature of 2.7 K.
  C) the expansion of the Universe has redshifted the wavelengths of the radiation emitted by the big bang about 1100 times longer.
  D) the gas clouds that emitted the photons during the big bang emitted blackbody radiation with a wavelength of 2.7 nm.

Question 2

Modern evidence based on what can be determined about the products of nuclear reactions in the first few minutes after the big bang shows that dark matter:
 
  A) does not have any density.
  B) does not exist.
  C) is not present in galaxies.
  D) is not baryonic.


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mmj22343

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

C

Answer to Question 2

D


B

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Reply 2 on: Jul 27, 2018
Excellent

dawsa925

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Reply 3 on: Yesterday
Wow, this really help

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