Two Stereo Speakers Mounted 4 $10.7 \mathrm {~m}$ From the Wall with the Speakers,what Is the Wavelength of Emit

Two stereo speakers mounted 4.52 m apart on a wall emit identical sound waves.You are standing at the opposite wall of the room at a point directly between the two speakers.You walk 2.11 m parallel to the wall,to a location where you first notice that the sound intensity is essentially zero.If the wall along which you are walking is $10.7 \mathrm {~m}$ from the wall with the speakers,what is the wavelength of the sound waves? The walls are cushioned to absorb sound reflections.

A) 1.71 m
B) 2.05 m
C) 2.57 m
D) 2.91 m

Correct Answer:

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