Two identical loudspeakers are placed on a wall 1.00 m apart. A listener stands 4.00 m from the wall directly in front of one of the speakers. A single oscillator is driving the speakers at a frequency of 300 Hz. (a) What is the phase difference in radians between the waves from the speakers when they reach the observer? (Your answer should be between 0 and 2π.) (b) What is the frequency closest to 300 Hz to which the oscillator may be adjusted such that the observer hears minimal sound?

A carousel that is 6.00m in radius has a pair of 600Hz sirens mounted on posts at opposite ends of a diameter. The carousel rotates with an angular velocity of 0.900rad/s. A stationary listener is located at a distance from the carousel. The longest wavelength reaching the listener from the sirens is closest to

Ethan was driving, moving at 16.0 m/s, approaching the open window of Khuslen who was experimenting with a frequency generator on his phone. If Khuslen's phone was generating a tone of 452 Hz, what was the frequency perceived by Ethan? Assume the speed of sound to be 343 m/s.

For testing purposes, a musical instrument manufacturing company creates a device so that when you blow into one end with your instrument, sound comes out the other end in opposite directions. A sound technician uses a whistle and generates sound waves with a frequency of 280 Hz. The waves travel in opposite directions in a sound studio, are reflected by end walls, and return. The studio is 43.0 m long and the whistle is located 14.0 m from one end. What is the phase difference (in degrees) between the reflected waves when they meet at the source of the sound? The speed of sound in air is 343 m/s. 17044.898X See if you can determine the path difference and the wavelength, and then express the path difference in terms of the wavelength. What part of the path difference is of interest to us when finding the phase difference? How is this part of the path difference related to the phase difference? • Need Help? Read It