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(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

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(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.) -21.20 X The piano string is 'in tune' when the beat frequency is zero. % eed Help? Watch It Submit

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