The document discusses two sound sources emitting spherical waves in air, emphasizing their phase relationship and wavelength differences. It poses questions regarding path length differences and interference at specified points, as well as calculations related to matching frequencies and the movement of one source while hearing beats. The findings indicate that the sources are out of phase with the same wavelengths.

1. Two sound sources, I and 2, are emitting spherical waves in air. The figure on the right shows a
top-down view of the two sources. The two sources are separated by a distance of 5.0 m. DI.
Which of the following is true? (eirele one) a. The two sources are playing in phase with the
same wavelength. The two sources are playing out of phase with the same wavelength. b. c. The
two sources are playing in phase with 2 ifferent wavelengths The two sources are playing out of
phase with different wavelengths 2. For all three points P, Q, and R: Indicate ?r (the path length
difference, in terms ofA), and whether there is constructive or destructive interference at that
point. Determine the wavelength and frequency of the sound waves. How long should an open-
closed tube be in order for its fundamental frequency to match the frequency of the 3. 4. two
sources? 5. You are standing directly in line with the two sources. One source is kept stationary
while the other is moved away from you. If you hear beats at a frequency of 3 Hz, how fast is the
source moving?
Solution
As observed in figure it can be seen that both sources are out of phase with same wavelengths.