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A cellist tunes the C-string of her instrument to a fundamental frequency of 65.4 Hz ....

A cellist tunes the C-string of her instrument to a fundamental frequency of 65.4 Hz . The vibrating portion of the string is 0.600 m long and has a mass of 14.7 g .

What percentage increase in tension is needed to increase the frequency from 65.4 Hz to 73.4 Hz , corresponding to a rise in pitch from C to D?

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