Solving a problem in physics, section 41, paragraph 68

Solving a problem in physics, section 41, paragraph 68

68. Two speakers spaced d = 0,5 m apart and reproduce the same musical tone at a frequency ν = 1500 Hz. The receiver is located at a distance l = 4 m from the center speaker. Taking the sound velocity υ = 340 m / s, determine at what distance from the center line parallel to the dynamics necessary to push the receiver, so he gave the first interference minimum.

Additional information:

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)