Situation 16.1
A standing wave of the third overtone is induced in a stopped pipe,1.2 m long.The speed of sound is 340 m/s.
-In Situation 16.1,the frequency of the sound produced by the pipe,in SI units,is closest to:
A)210
B)280
C)350
D)430
E)500

Question

Quizplus · Accepted Answer

The third overtone in a stopped pipe corresponds to the 7th harmonic. The fundamental frequency is given by $ f_1 = \frac{v}{4L} $. For the 7th harmonic, $ f_7 = 7 \times f_1 = \frac{7 \times 340}{4 \times 1.2} \approx 500 $ Hz.

Situation 16.1 a Standing Wave of the Third Overtone Is Induced in Induced