1. The problem statement, all variables and given/known data
Two speakers A and B, sends out sounds at 400 hz
In what distance x between speaker A and the point P is it constructive interference ?
http://ift.tt/1ApwJkz
2. Relevant equations
λ = 2ΔL/(2p-1),
v = 340 m/s
f = 400 Hz
3. The attempt at a solution
λ = 2ΔL/(2p-1),
λ = 340/400 = 0.85 m <==>
lowest constructive interference p = 1
0.85 m = ΔL <==>
0.85 = y - x, where y = (2.5)^2+x^2=y^2 is the distance between P and B.
Is this right ?
Two speakers A and B, sends out sounds at 400 hz
In what distance x between speaker A and the point P is it constructive interference ?
http://ift.tt/1ApwJkz
2. Relevant equations
λ = 2ΔL/(2p-1),
v = 340 m/s
f = 400 Hz
3. The attempt at a solution
λ = 2ΔL/(2p-1),
λ = 340/400 = 0.85 m <==>
lowest constructive interference p = 1
0.85 m = ΔL <==>
0.85 = y - x, where y = (2.5)^2+x^2=y^2 is the distance between P and B.
Is this right ?
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