(Solved) : Two Loudspeakers And B Radiate Sound Uniformly In All . . .

Two loudspeakers, A and B, radiate sound uniformly in all directions in air at 20°C. The acoustic power output from A is 8.00 X 10-4 W, and from B it is 6.00 X 10-5 W. Both loudspeakers are vibrating in phase at a frequency of172 Hz.
(a) Determine the difference in phase of the two signals at a point C along the line joining A and B, 3.00m from B and4.00mfromA (Fig. 16.46).
(b) Determine the intensity and sound intensity level at C from speaker A if speaker B is turned off and the intensity and sound intensity level at point C from speaker B if speaker A is turned off.
(c) With both speakers on, what are the intensity and sound intensity level at C?

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