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planauts
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Homework Statement
[PLAIN]http://img18.imageshack.us/img18/6175/questionn.gif
Homework Equations
The Attempt at a Solution
At M the waves are in phase and at P the waves have exactly (pi) phase difference. M and P are 2.00 m apart. So it would mean that the largest possible wavelength of sound emitted by the loudspeakers would be 2.00*2 = 4.00 m.
But the answer key says 8.00 m.
Thanks,
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