We consider two sound sources that oscillate in phase with a frequency of 107 Hz. At a point 6.28 m from one source and 7.28 m from the other, the displacement amplitude of the sound from each source separately is 5.91 x 107 m. You may use a speed of sound of 343 m/s and density of air of 1.22 kg/m3. a. What is the phase difference (,6 in the sound waves from the two sources at that point? Show your work. rad b. What is the displacement amplitude of the resultant wave at that point? Show your work. x 107 m c. What is the sound intensity at that point? Show your work. 0*5E 2 x1 m d. What is the sound level at that point? Show your work. dB