3. A closed end air column of length 3.7 m is resonating to produce a sound. a) Determine the frequency of the first harmonic if the air temperature is 24.0° C

b) What frequency note would you have to play next to this air column in order to hear 5 beats per second? c) If the same air column in the same medium was resonating at the 7th harmonic, determine the new frequency.