Speed of sound in the air:
At 20°C, the frequency of sound will not change.
An unfingered guitar string is 0.73 m long and is tuned to play E above middle C (330 Hz). The finger is placed 0.242 m from the end of this string to play B above middle C (494 Hz).
What are the
(a) frequency and
(b) wavelength of the sound wave produced in air at 20°C