B 2.00 m - 1.00 m
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Two loudspeakers, A and B (Fig. ), are driven by the
same amplifier and emit sinusoidal waves in phase. Speaker B is 2.00 m
to the right of speaker A. Consider point Q along the extension of
the line connecting the speakers, 1.00 m to the right of speaker B.
Both speakers emit sound waves that travel directly from the speaker to
point Q. What is the lowest frequency for which (a) constructive interference
occurs at point Q; (b) destructive interference occurs at point Q?
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