In Fig. 17-34, sound waves A and B, both of wavelength l,
Chapter , Problem 18(choose chapter or problem)
In Fig. 17-34, sound waves A and B, both of wavelength l, are initially in phase and traveling rightward, as indicated by the two rays. Wave A is reflected from four surfaces but ends up traveling in its original direction.Wave B ends in that direction after reflecting from two surfaces. Let distance L in the figure be expressed as a multiple q of l:L # ILW d d d S1 S2 S3 S4 P Figure 17-36 20. D S1 S2 Figure 17-35 19 and 105. L L L A B Figure 17-34 18.ql.What are the (a) smallest and (b) second smallest values of q that put A and B exactly out of phase with each other after the reflections?
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