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Author Question: Wendy measures a recession velocity for two distant galaxies, well outside our Local Group of ... (Read 56 times)

captainjonesify

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on: Jul 27, 2018
Wendy measures a recession velocity for two distant galaxies, well outside our Local Group of galaxies. Galaxy A has a recession velocity of 35,000 km/s and Galaxy B has a recession velocity of 70,000 km/s.
 
  What can she say about the distances to those galaxies?
  A) She can't say anything about the distances to Galaxy A or B.
  B) Galaxy A is twice as far as Galaxy B.
  C) Galaxy B is four times as far as Galaxy A.
  D) Galaxy B is twice as far as Galaxy A.
  E) Galaxy A is four times as far as Galaxy B.

Question 2

There is no limit to the mass with which a star can be born.
 
  Indicate whether the statement is true or false


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katieost

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

D

Answer to Question 2

FALSE


captainjonesify

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Reply 2 on: Jul 27, 2018
Excellent

peter

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Reply 3 on: Yesterday
Wow, this really help

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