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Author Question: The orbits of population I stars I. are confined to disk of the galaxy. II. are very elliptical. ... (Read 52 times)

bb

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on: Jul 27, 2018
The orbits of population I stars I. are confined to disk of the galaxy. II. are very elliptical. III. are nearly circular. IV. are randomly inclined to the disk of the galaxy.
 
  a. I
  b. IV
  c. I & IV
  d. II & IV
  e. I & III

Question 2

Opacity is
 
  a. the balance between the pressure and force of gravity inside a star.
  b. the force that binds protons and neutrons together to form a nucleus.
  c. the force that binds an electron to the nucleus in an atom.
  d. a measure of the resistance to the flow of radiation (photons) through a gas.
  e. the temperature and density at which a gas will undergo thermonuclear fusion.


allisonblackmore

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

e

Answer to Question 2

d


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bb

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Reply #2 on: Jul 27, 2018
TY


allisonblackmore

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Reply #3 on: Jul 27, 2018
You're welcome


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