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Author Question: Spurs are probably the result of ____. a. self-sustaining star formation b. spiral density waves ... (Read 39 times)

tiffannnnyyyyyy

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on: Jul 27, 2018
Spurs are probably the result of ____.
 
  a. self-sustaining star formation
  b. spiral density waves
 c. differential rotation
 d. the central galactic bar
 e. the short lifetime of O stars

Question 2

The equivalence principle can be best illustrated by ____.
 
  a. a person riding in an elevator
 b. a rocket coasting through space at a constant velocity
  c. the change in mass of a moving body
 d. the formation of energy by nuclear fusion
 e. a car ride on a highway with the windows open


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Carissamariew

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

a

Answer to Question 2

a


tiffannnnyyyyyy

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Reply 2 on: Jul 27, 2018
Excellent

yeungji

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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