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Author Question: What resistance must be put in series with a 30-mH inductor at 4000 Hz to have a total impedance of ... (Read 7 times)

Evvie72

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  • Posts: 519
on: Jul 29, 2018
What resistance must be put in series with a 30-mH inductor at 4000 Hz to have a total impedance of 8.0  104 ?
 
  A) 30  104
  B) 5.0  104
  C) 6.0  104
  D) 7.0  104
  E) 8.0  104

Question 2

A moving object's mass is twice its rest mass. Its length (in the direction of travel) must therefore be
 
  A) one-half its proper length.
  B) twice its proper length.
  C) one-fourth its proper length.
  D) four times its proper length.
  E) times its proper length.


thall411

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

E

Answer to Question 2

A


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