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Author Question: When mass is accreted into a black hole, how much total mass-energy can be radiated away? A) .007 ... (Read 75 times)

APUS57

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on: Jul 27, 2018
When mass is accreted into a black hole, how much total mass-energy can be radiated away?
 
  A) .007
  B) .08
  C) 1.4
  D) 20
  E) 50

Question 2

Close binary star systems are thought to form when
 
  A) two interstellar gas clouds happen to contract so close together that there's no room for a disk or planets.
  B) the protostellar disk around a protostar has enough material to form a second star.
  C) gravity pulls two neighboring protostars quite close together, but angular momentum causes them to orbit each other rather than colliding.
  D) a protostar emits two jets, each of which turns into a star.


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KKcool

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

D

Answer to Question 2

C


APUS57

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Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

momolu

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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