1,720-Hz tone is played on a stereo in an open field. A person stands at a point that is 4 m from one of the speakers and 4.4 m from the other. What must the minimum wavelength be for the person to hear the tone?

Solve Apo = 0 Submit ✓ Correct Because constructive interference is observed when Ar = 0, that is, when the listener is equidistant from the sources, the speakers must be sources of in-phase waves. Part C Find v, the speed of the sound waves in air. Express your answer in meters per second to three significant figures. ► View Available Hint(s) v = 351 m/s Submit Previous Answers Review Part D T₂ = Previous Answers Correct How far (r.) from its original location should the speaker be moved for the listener to experience constructive interference for the second time? Express your answer in meters to three significant figures. ► View Available Hint(s) OF IVE ΑΣΦ ? m

Sound with a 29 cm wavelength travels rightward from a source and through a tube that consists of a straight portion and a half-circle.  Part of the soundwave travels through the circle and rejoins the the rest of the wave which goes directly through the straight portion.  This rejoining results in interference.  What is the smallest radius r  (in cm) that results in an intensity minimum at the detector.  The maximum destructive interference will occur when the difference in the distance travelled by the two waves is 1/2 of a wavelength.  To solve this problem express the difference in the distance travelled by the two waves as a function of r and set this amount equal to 1/2 of a wavelength.

Two sources are 7.2 cm apart and vibrate in phase at 7.0 Hz. A point on the third nodal line is 25.0 cm from one source and 27 cm from the other. (a) Calculate the wavelength of the waves. (b) Calculate the speed of the waves.