question archive In a stretch string fixed at both ends, the seventh harmonic occurs at 90 Hz

In a stretch string fixed at both ends, the seventh harmonic occurs at 90 Hz

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In a stretch string fixed at both ends, the seventh harmonic occurs at 90 Hz. Assuming the speed of

transverse wave in the string is 30 m s , find the length of the string.

 

The length of a pipe with one end closed is 20.0 cm. If the speed of sound in air is 330 ms

find the three lowest frequencies for the sound emitted when one blows across the open end of the pipe.

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