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Author Question: What is the speed of the wave described by y(x,t) = A cos(x2 + 2Bxt +B2t2 ) A) B/2 B) B ... (Read 50 times)

fox

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on: Jul 29, 2018
What is the speed of the wave described by y(x,t) = A cos(x2 + 2Bxt +B2t2 )
 
  A)
 
  B/2
  B)
 
  B
  C)
 
  2Bx
  D)
 
  B2
  E)
 
  The function given is not a solution to the wave equation.

Question 2

A charged capacitor is connected to an inductor to form an LC circuit with a frequency of oscillation f = 1.6 Hz. At time t = 0 the capacitor is fully charged.
 
  At a given instant later the charge on the capacitor is measured to be Q = 3 C and the current in the circuit is equal to 75 A. What is the maximum charge of the capacitor? A)
 
  6 C
  B)
 
  10 C
  C)
 
  8 C
  D)
 
  2 C
  E)
 
  4 C


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jackie

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

B

Answer to Question 2

C


fox

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Reply #2 on: Jul 29, 2018
TY


jackie

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Reply #3 on: Jul 29, 2018
You're welcome


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