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Author Question: Which galaxy rotation curve, based on hydrogen gas speeds and locations, would indicate an unusually ... (Read 37 times)

waynest

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on: Jul 27, 2018
Which galaxy rotation curve, based on hydrogen gas speeds and locations, would indicate an unusually large amount of dark matter?
 
  A) Orbital speeds remain constant, beyond where the stars are.
  B) Orbital speeds rise, beyond where the stars are.
  C) Orbital speeds decline, beyond where the stars are.

Question 2

What is true of Titan's atmosphere?
 
  A) It was discovered by the Voyager 1 spacecraft.
  B) It is roughly similar to Earth's in composition and density.
  C) It has produced a runaway greenhouse effect.
  D) It is oxygen rich.
  E) It is primarily hydrogen.


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amcvicar

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

B

Answer to Question 2

B


waynest

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Reply 2 on: Jul 27, 2018
Excellent

emsimon14

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Reply 3 on: Yesterday
Wow, this really help

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