a. A siren on a tall pole radiates sound waves uniformly in all directions. At a distance of 15.0 m from the siren, the sound intensity is 0.250 W/m2. At what distance is the intensity 0.010 W/m2?
b. The second harmonic of a vibrating string is 565 Hz. What is the fundamental frequency? What are the second and third overtones for this string?
c. On the planet Arrakis a male ornithoid is flying toward his mate at 25.0 m/s while singing at a frequency of 1200 Hz. If the stationary female hears a tone of 1240 Hz, what is the speed of sound in the atmosphere of Arrakis?
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