Author Question: An AC voltage source, with a peak output of 120 V, results in dissipation of energy in a resistor at ... (Read 90 times)

craiczarry · **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