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Author Question: Dark energy accounts for what percent of the known energy in the universe? A) 68 B) 24 C) 8 D) ... (Read 93 times)

rosent76

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on: Jul 29, 2018
Dark energy accounts for what percent of the known energy in the universe?
 
  A) 68 B) 24 C) 8 D) 94

Question 2

Doubling only the mass of a vibrating mass-and-spring system produces what effect on the system's mechanical energy?
 
  A)
 
  increases the energy by a factor of square root of two
  B)
 
  increases the energy by a factor of two
  C)
 
  increases the energy by a factor of three
  D)
 
  increases the energy by a factor of four
  E)
 
  produces no change


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amanda_14

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Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

E


rosent76

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Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


amanda_14

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Reply #3 on: Jul 29, 2018
Great! Please up vote :D


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