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Author Question: One of the first atomic explosion released approximately 1.0 1014 J of energy. How much matter had ... (Read 33 times)

D2AR0N

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on: Jul 29, 2018
One of the first atomic explosion released approximately 1.0  1014 J of energy. How much matter had to be changed into energy to produce this yield? (c = 3.0  108 m/s)
 
  A) 1.1 g
  B) 23 g
  C) 13 g
  D) 0.45 kg
  E) 1.1 kg

Question 2

An ac generator consisting of a coil with N turns rotating at angular speed  in an external magnetic field B produces a maximum emf 0.
 
  If you now decrease the number of turns in the coil to N/2 and at the same time cause it to rotate twice as fast, what will be the new maximum emf if you do not change any of the other quantities?
  A) 20 B) 0 C) 40 D) 0/4 E) 0/2


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pikon

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

A

Answer to Question 2

B


D2AR0N

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Reply #2 on: Jul 29, 2018
Thanks


pikon

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Reply #3 on: Jul 29, 2018
Welcome :)


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