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While attempting to tune a string to 515 Hz, a piano tuner hears 5 beats/s between a reference oscillator and the string. (a) What are the possible

While attempting to tune a string to 515 Hz, a piano tuner hears 5 beats/s between a reference oscillator and the string.
(a) What are the possible frequencies of the string?
1 Hz (lowest possible frequency)
2 Hz (highest possible frequency)
(b) When she tightens the string slightly, she hears 6 beats/s. What is the frequency of the string now?
3
Your response differs from the correct answer by more than 10%. Double check your calculations. Hz
(c) By what percentage should the piano tuner now change the tension in the string to bring it into tune? (Give a positive answer for an increase in the tension, or a negative answer for a decrease in the tension.)
4

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