Dark energy accounts for what percent of the known energy in the ...

[rosent76]

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

[amanda_14]

Answer to Question 1

A

Answer to Question 2

E

[rosent76]

Both answers were spot on, thank you once again

[amanda_14]

Great! Please up vote