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An unfingered guitar string is 0

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An unfingered guitar string is 0.73 m long and is tuned to play E above middle C (330 Hz).

(a) How far from the end of this string must the finger be placed to play B above middle C (494 Hz)?
?m
(b) What is the wavelength on the string of this 494 Hz wave?
?m
(c) What are the frequency and wavelength of the sound wave produced in air at 20