In certain ranges of a piano keyboard, more than one string is tuned to the same note to provide extra loudness. For example, the note at 1.10 x 102 Hz has two strings at this frequency. If one string slips from its normal tension of 6.00 x 102 N to 5.40 x 102 N, what beat frequency is heard when the hammer strikes the two strings simultaneously?

Principles of Physics: A Calculus-Based Text
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ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
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Chapter14: Superposition And Standing Waves
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In certain ranges of a piano keyboard, more than one string is tuned to the same note to provide extra loudness. For example, the note at 1.10 x 102 Hz has two strings at this frequency. If one string slips from its normal tension of 6.00 x 102 N to 5.40 x 102 N, what beat frequency is heard when the hammer strikes the two strings simultaneously?

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