Two identical loudspeakers 10.0 m apart are drivenby the same oscillator with a
Chapter 18, Problem 13(choose chapter or problem)
Two identical loudspeakers 10.0 m apart are drivenby the same oscillator with a frequency of f 5 21.5 Hz(Fig. P18.13) in an area where the speed of sound is344 m/s. (a) Show that a receiver at point A recordsa minimum in sound intensity from the two speakers.(b) If the receiver is moved in the plane of thespeakers, show that the path it should take so that theintensity remains at a minimum is along the hyperbola9x2 2 16y2 5 144 (shown in red-brown in Fig. P18.13).(c) Can the receiver remain at a minimum and movevery far away from the two sources? If so, determine thelimiting form of the path it must take. If not, explainhow far it can go.
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