Two sources of sound placed as in the picture (will attach), at a distance x=3m from O, one hears a minimal sound. Find λ, frequency and other stuff.

Question

feynanon · Answer

attachment

sachintha · Answer

Is this all of the information given?

feynanon · Answer

Yes, it is. I guess I can get the extra distance with some triangles there, and since it's MINIMAL noise it must mean that lambda=1/2 or a multiple of 1/2. 

So this is what I ended up with   Velocity of sound=340 m/s

extra distance=2
extra distance= 1/2 lambda
lambda=4m

V=LambdaxFreq
Freq= V/Lambda

Do you think this is ok?