(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A pair of speakers separatd by .700m are driven by the same oscillator at a frequency of 690Hz. An observer originally positioned at one of the speakers begins to walk along a line perpindicular to the line joining the speakers. How far mus the observer walk before reaching a relative maximum in intensity

2. Relevant equations

v(air)=345m/s

r2-r1=n(lambda)

3. The attempt at a solution

How do i figure out the r values when only one side is given? I know i should use the pythagorean theorem here. I also know a relative maximum is constructive interference so i will use a full integer for n. r2-r2=1(lambda). I'm not sure what i'm missing here.

i have:

f=690Hz

lambda=.5m

T=.0015s

suggestions would be appreciated.

thanks

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# Homework Help: Speaker Sound waves

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