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Statement of a problem № 3478

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(a) A piano string of length 0.6 m is under a tension of 300 N and vibrates with a fundamental frequency of 660 Hz. What is the mass density of the string? (b) What are the frequencies of the first two harmonics? (c) A flute organ pipe (opened at both ends) also plays a note of 660 Hz. What is the length of the pipe? (you may take the speed of sound as V = 340 m/s).

Solution:
(a)  A piano string of length 0.6 m is under a tension of 300 N and vibrates wit

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