Author Question: In astronomical usage, all atoms heavier than helium are referred to as__________. A) metals B) ... (Read 43 times)

panfilo

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In astronomical usage, all atoms heavier than helium are referred to as__________.
 
  A) metals
  B) Population I atoms
  C) halos
  D) dark matter

Question 2

__________is a graph of orbital velocity versus radius in the disk of a galaxy.
 
  A) A rotation curve
  B) A normal distribution
  C) The H-R diagram
  D) The light curve



Cnarkel

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Answer to Question 1

A

Answer to Question 2

A



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panfilo

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Both answers were spot on, thank you once again



Cnarkel

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