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Author Question: Active galaxies are believed to be the product of collisions and interactions because ____. a. ... (Read 84 times)

haleyc112

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Active galaxies are believed to be the product of collisions and interactions because ____.
 
  a. they are always seen in contact with another galaxy
 b. the transfer of matter would explain the black hole eruption
 c. the collision of individual stars would explain the black hole eruption
  d. central bulges are formed by collisions
 e. supermassive black holes are necessary for galactic collisions

Question 2

The _______________ effect changes the observed wavelength of an emitted photon if the source is moving toward or away from the observer.
 
  Fill in the blank(s) with correct word



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prumorgan

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Answer to Question 1

b

Answer to Question 2

Doppler




prumorgan

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