- #1
lemin_rew
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Homework Statement
two speakers producing exactly the same frequency and always in phase are located on an east-west line emitting sound toward the north. the speakers are 30cm apart and a microphone is loacted 40cm due north of one speaker. which of the following wavelengths would produce sound with the intensity at the locations of the microphone?
Homework Equations
Xn/L = (n-1/2)λ/d
or
Δx/L = λ/d
The Attempt at a Solution
i know d=30cm
L=40cm
and n=2
but i don't know where to get Xn (if that is the proper equation to use for this question)
also the answer is 20cm
please help me, i have no idea how to solve this question to get that answer.
thank you