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Author Question: Interactions among galaxies also are thought to influence a galaxy's type in at least some cases. ... (Read 73 times)

mydiamond

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on: Jul 27, 2018
Interactions among galaxies also are thought to influence a galaxy's type in at least some cases. Which of the following does not support the idea that interactions can shape galaxies?
 
  A) the presence of features, such as tails extending out of galaxies, bridges between galaxies, and rings of stars around galaxies
  B) the fact that galaxies with distorted appearances are more common at great distances than nearby
  C) computer modeling of collisions between galaxies
  D) the fact that more distant galaxies have larger redshifts

Question 2

With a Hubble constant of 70 km/sec/Mpc, the critical density would be
 
  A) 6.23  10-23 g/mole.
  B) 3  10-31 g/cc.
  C) 1.4 g/cc.
  D) 4  10-36 g/cc.
  E) 9  10-27 kg/m3.


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strudel15

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

D

Answer to Question 2

E


mydiamond

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Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

meganmoser117

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

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