•10 E Underwater illusion. Oneclue used by your brain to determine Wavefronts,the direction of a source of sound is !the time delay At between the arrivalof the sound at the ear closer to thesource and the arrival at the fartherear. Assume that the source is distantDso that a wavefront from it is approx-imately planar when it reaches you,and let D represent the separationbetween your ears. (a) If the source is located at angle 0 in front ofyou (Fig. 17-31), what is At in terms of D and the speed of sound vin air? (b) If you are submerged in water and the sound source is di-rectly to your right, what is At in terms of D and the speed of soundVw in water? (c) Based on the time-delay clue, your brain interpretsthe submerged sound to arrive at an angle 0 from the forward direc-LFigure 17-31 Problem 10.tion. Evaluate ofor fresh water at 20°C.

So we can solve this problem by using the idea that the time delay is due to distance. That means…

•10 * Underwater illusion. One clue used by your brain to determine Wavefronts the direction of a source of sound is ! the time delay At between the arrival of the sound at the ear closer to the | d source and the arrival at the farther ear. Assume that the source is distant D so that a wavefront from it is approx- imately planar when it reaches you, and let D represent the separation between your ears. (a) If the source is located at angle 6 in front of you (Fig. 17-31), what is At in terms of D and the speed of sound v in air? (b) If you are submerged in water and the sound source is di- rectly to your right, what is At in terms of D and the speed of sound V, in water? (c) Based on the time-delay clue, your brain interprets the submerged sound to arrive at an angle 0 from the forward direc- tion. Evaluate 0for fresh water at 20°C. Figure 17-31 Problem 10.

•10 * Underwater illusion. One clue used by your brain to determine Wavefronts the direction of a source of sound is ! the time delay At between the arrival of the sound at the ear closer to the | d source and the arrival at the farther ear. Assume that the source is distant D so that a wavefront from it is approx- imately planar when it reaches you, and let D represent the separation between your ears. (a) If the source is located at angle 6 in front of you (Fig. 17-31), what is At in terms of D and the speed of sound v in air? (b) If you are submerged in water and the sound source is di- rectly to your right, what is At in terms of D and the speed of sound V, in water? (c) Based on the time-delay clue, your brain interprets the submerged sound to arrive at an angle 0 from the forward direc- tion. Evaluate 0for fresh water at 20°C. Figure 17-31 Problem 10.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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