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Author Question: The gas density in an emission nebula is typically about how many particles per cc? A) dozen B) ... (Read 57 times)

torybrooks

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on: Jul 27, 2018
The gas density in an emission nebula is typically about how many particles per cc?
 
  A) dozen
  B) hundred
  C) thousand
  D) hundred thousand
  E) million

Question 2

How would the geometry of a universe with o greater than 1 differ from one with o less than 1?
 
  What will be an ideal response?


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taylorsonier

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

B

Answer to Question 2

If o is greater than 1, the geometry of space is positive and could be likened to the surface of a sphere. If o is less than 1, the geometry is negative and space is saddle-shaped.


torybrooks

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Reply 2 on: Jul 27, 2018
Excellent

momolu

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Reply 3 on: Yesterday
Wow, this really help

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