1)A Clarinet sounds as a closed pipe. If a clarinet sounds a note with a pitch of 400 Hz, what are the frequencies of the lowest three harmonics produced by this instrument?
2)An open-ended organ pipe is 5.1 m long. What is the frequency for f2?
3)A guitar string 51 cm long vibrates with a standing wave that has three antinodes.
(a) Which harmonic is this?
(b) What is the wavelength of this wave?