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Author Question: What is the typical main sequence lifetime of a B-type star? A) less than a million years B) 20 ... (Read 66 times)

nenivikky

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on: Jul 27, 2018
What is the typical main sequence lifetime of a B-type star?
 
  A) less than a million years
  B) 20 million years
  C) 100 million years
  D) 1 billion years
  E) 10 billion years

Question 2

Which moon of Saturn constantly changes its rotational speed and rotational axis?
 
  A) Mimas
  B) Iapetus
  C) Hyperion
  D) Calypso
  E) Janus


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SomethingSomething

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

B

Answer to Question 2

C


nenivikky

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Reply 2 on: Jul 27, 2018
Gracias!

Dominic

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Reply 3 on: Yesterday
Excellent

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