A) Show that the average rate with which energy is transported along a cord by a mechnical wave of frequency f and amplitude D is:
P(average) = 2(pi^2)u v(f^2)(D^2)
v is speed of the wave
u is the mass per unit length (M/L)
B) If the cord is under a tension Ft =100 N and has mass per unit length 0.10 kg/m, what power is required to transmit 120 Hz waves of amplitude 2.0 cm?
For part b, I think I got the answer, I just plug in the numbers with (root (100N/.10kg/m)) = v, right?
I'm not sure how to prove part A though.
2 answers
A pane progresive is represented by the equation y=0.1sin into 200 wath is the frequency, wavelength, wave speed
hand sketch of polygens
2 answers