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Author Question: How is the lifetime of a star related to its mass? A) More massive stars live slightly shorter ... (Read 56 times)

olgavictoria

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on: Jul 27, 2018
How is the lifetime of a star related to its mass?
 
  A) More massive stars live slightly shorter lives than less massive stars.
  B) More massive stars live much longer lives than less massive stars.
  C) More massive stars live much shorter lives than less massive stars.
  D) More massive stars live slightly longer lives than less massive stars.

Question 2

No one can hear you scream (or fire a weapon) in space, regardless of the Hollywood special effects. Explain why.
 
  What will be an ideal response?


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emilymalinowski12

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

C

Answer to Question 2

Sound waves must travel though a material medium, and cannot pass through a vacuum. The blast might be seen, but the boom will not be heard.


olgavictoria

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Reply 2 on: Jul 27, 2018
Excellent

bitingbit

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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