A pair of inphase stereo speakers is placed side by side, 0.63 m apart. You stand directly in front of one of the speakers, 0.8 m from the speaker. What is the lowest frequency that will produce constructive interference at your location?
the speed of sound is 343 m/s.
the speed of sound is 343 m/s.

Hello
The path difference to one, and to the other loudspeaker is sqrt(0,8^2+0,63^2)  0,8 = 0,2183 m.
And constructive interference occurs when the path difference is nλ.
1λ = c/f > F = c/λ = 343/0,2183 = 1571 Hz
Regards
The path difference to one, and to the other loudspeaker is sqrt(0,8^2+0,63^2)  0,8 = 0,2183 m.
And constructive interference occurs when the path difference is nλ.
1λ = c/f > F = c/λ = 343/0,2183 = 1571 Hz
Regards