1. Two coherent sources fluctuate in identical phases a

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1. Two coherent sources fluctuate in identical phases at a frequency ν = 400 Hz. The wave velocity in the medium υ = 1 km / s. Determine at what the smallest path difference not equal to zero, will be observed: 1) the maximum amplification of the oscillations; 2) The maximum attenuation of oscillations.
Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)