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Chapter 17: Q40P (page 509)
Organ pipe , with both ends open, has a fundamental frequency of. The third harmonic of organ piperole="math" localid="1661418890848" , with one end open, has the same frequency as the second harmonic of pipe. How long are (a) pipeand (b) pipe?
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In figure, sound with a 4.40 cm wavelength travels rightward from a source and through a tube that consists of a straight portion and half-circle. Part of the sound wave travels through the half-circle and then rejoins the rest of the wave, which goes directly through the straight portion. This rejoining results in interference. What is the smallest radius that result in an intensity minimum at the detector?
Suppose a spherical loudspeaker emits sound isotropically at into a room with completely absorbent walls, floor, and ceiling (an anechoic chamber). (a) What is the intensity of the sound at distance from the center of the source? (b) What is the ratio of the wave amplitude at to that at ?
At a certain point, two waves produce pressure variations given by and .At this point, what is the ratio , where is the pressure amplitude of the resultant wave, iffis (a) 0 , (b) , (c) , and (d) ?
A certain loudspeaker system emits sound isotropically with a frequency of and an intensity ofrole="math" localid="1661500478873" at a distance ofrole="math" localid="1661501289787" . Assume that there are no reflections. (a) What is the intensity at ? At , what are (b) the displacement amplitude and (c) the pressure amplitude?
Figure, shows two points sourcesand that emit sound of wavelength The emission are isotropic and in phase, and the separation between the sources is . At any point Pon the, the wave fromand the wave from
interfere. When Pis very away,what are (a) the phase difference between the arriving waves from and (b) the type of interference they produce? Now move pointP along the towards. (c) Does the phase difference between the waves increase or decrease? At what distancedo the waves have a phase difference of (d) 0.50(e)1.00 (f)1.50?
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