Posted by **Ann** on Monday, December 13, 2010 at 6:13pm.

A person 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.

My Answer:

PD=2.3m-2m

PD=.3m

PD=(n-.5) λ, but λ=v/f

PD=(n-.5)(v/f)

.3=(n-.5)(350/f)

f=(n-.5)(350/.3)

f=(n-.5)(3500/3)

f=(3500n/3)-(3500/6)

f=(3500n/3)-(3500/6), where n is any real integer.

Is this right? Thanks for your help.

## Answer This Question

## Related Questions

- Physics - A person places the speakers 4.0 m apart and connects a signal ...
- physics - A student sets up two speakers spaced 2.5 meters apart, each playing ...
- Physics - Two small stereo speakers A and B that are 1.4 m apart are sending out...
- Physics - Both drawings show the same square, each of which has a side of length...
- Physics - Moe, Larry, and Curly stand in a line with a spacing of d = 1.40m . ...
- physics - Two speakers 14m apart are emitting tones at a frequency of 1020 Hz. ...
- physics - NEED HELP WITH ONLY PART C Two 135.1.0-W speakers, A and B, are ...
- Physics - Two speakers driven in a phase by the same amplifier at a frequency of...
- physics - A microphone is located on the line connecting two speakers that are 0...
- Physics - A pair of in-phase stereo speakers is placed side by side, 0.85 m ...

More Related Questions