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The E string on an electric bass guitar has a length of 0.606 m and, when producing the E note, vibrates at a fundamental frequency of 41.2 Hz. Players sometimes add to their instruments a device called a "D-tuner". This device allows the E string to be used to produce the note D, which has a fundamental frequency of 36.7 Hz. The D-tuner works by extensing the length of the string, keeping all other factors the same. By how much does a D-tuner extend the length of the E string?

 

 

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