One source of sound is at A and another is at B. The two sources are in phase. T

Question

One source of sound is at A and another is at B. The two sources are in phase. The distance AB = 10.0m. The frequency of the sound waves from both sources is 1000Hz, and both have the same amplitude. The speed of sound in air is 330m/s. A receiver is moved along the line AC starting from A and the resultant intensity goes through maxima and minima as the receiver moves along that line. At point C, the receiver detects the tenth maximum. AB is perpendicular to AC, but the diagram is not drawn to scale. Calculate the distance AC
.

Explanation / Answer

=330/1000=0.33m

BC-AC=n*0.33

(100+x^2)-x=0.33

100+x^2=0.33^2+x^2+0.66x

=> x=151.35

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