A 3.50 m Centerline В
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Two speakers A and B are 3.50 m apart, and each one is emitting a frequency of 444 Hz. However, because of signal delays in the cables, speaker A is one-fourth of a period ahead of speaker B. For points far from the speakers, find all the angles relative to the centerline, at which the sound from these speakers cancels. Include angles on both sides of the centerline. The speed of sound is 340 m/s.
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