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Author Question: In the GUT, electromagnetism and the strong nuclear force are the last to appear. Indicate ... (Read 117 times)

laurencescou

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on: Jul 27, 2018
In the GUT, electromagnetism and the strong nuclear force are the last to appear.
 
  Indicate whether the statement is true or false

Question 2

What is one of the differences between Cepheids and RR Lyrae variables?
 
  A) The period-luminosity relation holds only for RR Lyrae stars.
  B) The pulsations of RR Lyrae stars are much less regular than those of Cepheids.
  C) Cepheids are giants, but RR Lyrae stars are still on the main sequence.
  D) All Cepheids have the same brightness, but RR Lyrae stars vary greatly in luminosity.
  E) The RR Lyrae stars have much shorter periods than Cepheids.


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ttt030911

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

FALSE

Answer to Question 2

E


laurencescou

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Reply 2 on: Jul 27, 2018
Gracias!

covalentbond

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Reply 3 on: Yesterday
Excellent

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