Figure shows four isotropic point sources of sound that are uniformly spaced on an x axis. The
Question:
Figure shows four isotropic point sources of sound that are uniformly spaced on an x axis. The sources emit sound at the same wavelength λ and same amplitude sm, and they emit in phase. A point P is shown on the x axis. Assume that as the sound waves travel to P, the decrease in their amplitude is negligible. What multiple of sm, is the amplitude of the net wave at P if distance d in the figure is
(a) λ/a,
(b) λ/2, and
(c) λ?
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a The problem indicates that we should ignore the decrease in sound amplitude which m...View the full answer
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Related Book For 
Fundamentals of Physics
ISBN: 978-0471758013
8th Extended edition
Authors: Jearl Walker, Halliday Resnick
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