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Author Question: An AC voltage source, with a peak output of 120 V, results in dissipation of energy in a resistor at ... (Read 87 times)

craiczarry

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  • Posts: 527
on: Jul 28, 2018
An AC voltage source, with a peak output of 120 V, results in dissipation of energy in a resistor at rate of 50.0 W. What is the value of the resistance?
 a. 100 W
  c. 144 W
  b. 120 W
  d. 72.0 W

Question 2

The lowest A on a piano has a frequency of 27.5 Hz. If the tension in the 2.0-m long string is 151 N and one-half wavelength occupies the string, what is the mass of the string?
 a. 100 g
  c. 37 g
  b. 25 g
  d. 50 g


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lou

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Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

B


craiczarry

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Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

ricroger

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Reply 3 on: Yesterday
Excellent

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