A 025-M String, Vibrating in Its Sixth Harmonic, Excites a 0

question 14

Multiple Choice

A 0.25-m string, vibrating in its sixth harmonic, excites a 0.96-m pipe that is open at both ends into its second overtone resonance. The speed of sound in air is 345 m/s. The common resonant frequency of the string and the pipe is closest to

• A) 540 Hz.
• B) 360 Hz.
• C) 450 Hz.
• D) 630 Hz.
• E) 700 Hz.

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