How Does Speaker Placement Affect Sound Frequency Detection?

[Arnoldjavs3]

Hi I am having a rough time with this questoin .

Homework Statement

Question: A student enters Best Buy prepared to buy a pair of speakers. Before he does so, he conducts an experiment with them. He places the speakers 4.0 m apart and connects a signal generator to both speakers that produces a single and consistent tone. (constant wavelength and frequency) He then walks to a point that is 2.0 m from one speaker and 2.3 m from the other. At that point he notices a quiet “spot”. If the speed of the sound in the room is known to be 350 m/s, calculate the possible frequencies being played by the speakers.

Homework Equations

PD = (n-1/2) λ

The Attempt at a Solution

f = v/(lambda) = 350/6(2n + 1) = 58.33/(2n+1) ... n belongs to integer

 

[NascentOxygen]

350/6(2n + 1)

That denominator is not right. Try again. Take more care.

 

[Arnoldjavs3]

PD = (n-1/2) λ ... PD = 0.3