Chapter 17, Problem 23P

GO Figure 17-39 shows two point sources S₁ and S₂ that emit sound of wavelength λ = 2.00 m. The emissions are isotropic and in phase, and the separation between the sources is d = 16.0 m. At any point P on the x axis, the wave from S₁ and the wave from S₂ interfere. When P is very far away (x∞), what are (a) the phase difference between the arriving waves from S₁ and S₂ and (b) the type of interference they produce? Now move point P along the x axis toward S₁. (c) Does the phase difference between the waves increase or decrease? At what distance x do the waves have a phase difference of (d) 0.50λ, (e) 1.00λ, and (f) 1.50λ?

Figure 17-39Problem 23.