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Two compact sources of sound oscillate in phase with a frequency of 120 Hz where the speed of sound is 340 m/s. At a point that is 4.20 meters from one source and 4.48 meters from the other, the amplitude of the sound from each source separately is A.

(a) What is the phase difference in the sound waves from the two sources at that point?

rad

(b) What is the amplitude of the resultant wave at that point?

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