Energy is transmitted at an average rate of Pavg,1 by a wave of frequency f1 on a string with tension t1. What is the new average energy transmission rate Pavg,2 in terms of Pavg,1,
a. if the tension of the string is increased to t2 = 4t1, and
b. if, instead, the frequency of the wave is decreased to f2 = f1/2?
a. The rate of energy transferred = W
b. The average power transmitted by the
wave is
The average power is reduced by a factor of four.
the
rate of energy transmitted is quarter the original value.
a. The average power transmitted by the wave is
b. The rate of energy transferred = W
Therefore, the power transmitted doubles.