Choose the one alternative that best completes the statement or answers the question. -Two in-phase loudspeakers that emit sound with the same frequency are placed along a wall and are separated

Choose the one alternative that best completes the statement or answers the question.
-Two in-phase loudspeakers that emit sound with the same frequency are placed along a wall and are separated by a distance of 5.00 m. A person is standing 12.0 m away from the wall, equidistant
From the loudspeakers. When the person moves 1.00 m parallel to the wall, she experiences
Destructive interference for the first time. What is the frequency of the sound? The speed of sound
In air is 343 m/s.
A) 211 Hz
B) 422 Hz
C) 674 Hz
D) 256 Hz
E) 512 Hz

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