21.A musical instrument produces a beat frequency of 3 beats per second with another sound source that produces a frequency of 8.80102Hz. What are the possible wavelengths if the sounds are generated at 20C?

22. When a tuning fork with a frequency of 440.0 Hz is used with a resonator, the loudest sound produced occurs when the length of the closed-pipe tube is 19.50 cm long.

a. What is the wavelength of the sound produced?

b. What is the speed of sound in this case?

c. What is the approximate temperature, assuming the measurements are made at sea level?