Two identical speakers, labeled Speaker 1 and Speaker 2, are playing a tone with a frequency of 255 Hz, in phase. The centers of the speakers are located 6.00 m apart. Five observers are standing on a line that is 6.00 m in front of the speakers, as shown in the figure. Each observer is separated by 1.00 m and Pam is directly in front of speaker 1. The speed of sound is 343 m/s for this problem.
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- Two audio speakers are placed on a vertical rail. Speaker A is placed at head-level while Speaker B is place at some variable height, Ay, above Speaker A. Both speakers receive simultaneous input from a sine-wave generator so the speakers each produce a pure sinusoidal sound wave with a wavelength of 0.759 meters. Calculate the lowest height that Speaker B can be placed above Speaker A to produce a minimum of sound heard by person standing Ax = 4.50 meters directly in front of Speaker A. sy AX Image size: S M L MaxA warehouse building has two open doors along one wall as shown in the figure. The walls of the warehouse are lined with a sound-absorbing material. Two people stand at distance L = 103m from the wall with the open doors as shown. A train runs past the warehouse, blowing its horn to produce a loud sound with a frequency of 581 Hz. To person A, the sound of the train is loud and clear. To person B, the sound is barely audible. Assuming that person B is at the position of the first minimum in the sound interference pattern, determine the center-to-center distance d between the doors. Assume room temperature air. Image size: s M L Max open door у320 m A open door (figure not to scale)A celebrity holds a press conference, which is televised live. A television viewer hears the sound picked up by a microphone directly in front of the celebrity. This viewer is seated 1.9 m from the television set. A reporter at the press conference is located 4.3 m from the microphone and hears the words directly at the very same instant that the television viewer hears them. Using a value of 343 m/s for the speed of sound, determine the maximum distance between the television viewer and the celebrity.
- As the drawing shows, one microphone is located at the origin, and a second microphone is located on the +y axis. The microphones are separated by a distance of D = 1.35 m. A source of sound is located on the +x axis, its distances from microphones 1 and 2 being L1 and L2, respectively. The speed of sound is 343 m/s. The sound reaches microphone 1 first, and then, 1.30 ms later, it reaches microphone 2. Find the distances (in m) (a) L1 and (b) L2.Your answer is partially correct. A man strikes one end of a thin rod with a hammer. The speed of sound in the rod is 15 times the speed of sound in air. A woman, at the other end with her ear close to the rod, hears the sound of the blow twice with a 0.16 s interval between; one sound comes through the rod and the other comes through the air alongside the rod. If the speed of sound in air is 346 m/s, what is the length of the rod? Number Save for Later Using multiple attempts will impact your score. 10% score reduction after attempt 3 Units m Attempts: 2 of 5 used Submit AnswerAs the drawing shows, one microphone is located at the origin, and a second microphone is located on the +y axis. The microphones are separated by a distance of D-1.44 m. A source of sound is located on the +x axis, its distances from microphones 1 and 2 being L₁ and L₂, respectively. The speed of sound is 344 m/s. The sound reaches microphone 1 first, and then, 1.75 ms later, it reaches microphone 2. Find the distances (in m) (a) L₁ and (b) L₂ (a) Number: (b) Number Microphone 2) Microphone 1, D Units Units Sound source
- Sound (speed = 343 m/s) exits a diffraction horn loudspeaker through a rectangular opening like a small doorway. A person is sitting at an angle a off to the side of a diffraction horn that has a width D of 0.068 m. This individual does not hear a sound wave that has a frequency of 8400 Hz. When she is sitting at an angle of a/2, the frequency that she does not hear is different. What is this frequency? Number i UnitsA celebrity holds a press conference, which is televised live. A television viewer hears the sound picked up by a microphone directly in front of the celebrity. This viewer is seated 1.8 m from the television set. A reporter at the press conference is located 4.5 m from the microphone and hears the words directly at the very same instant that the television viewer hears them. Using a value of 343 m/s for the speed of sound, determine the maximum distance between the television viewer and the celebrity.Two identical speakers, labeled Speaker 1 and Speaker 2, are playing a tone with a frequency of 225 Hz , in phase. The centers of the speakers are located 6.00 m apart. Five observers are standing on a line that is 6.00 m in front of the speakers, as shown in the figure. Each observer is separated by 1.00 m and Tom is directly in front of speaker 1. The speed of sound is 343 m/s for this problem. Determine which observer or observers will experience constructive interference from the sound emitted by the speakers.
- Two loudspeakers, 1.7 m apart, emit sound waves with the same frequency along the positive x-axis. Victor, standing on the axis to the right of the speakers, hears no sound. As the frequency is slowly tripled, Victor hears the sound go through the sequence loud-soft-loud-soft-loud before becoming quiet again. What was the original sound frequency? Assume room temperature of 20∘C.Two identical speakers, labeled Speaker 1 and Speaker 2, are 6.00 m playing a tone with a frequency of 225 Hz, in phase. The centers of the speakers are located 6.00 m apart. Five observers are standing on a line that is 6.00 m in front of the Speaker 1 Speaker 2 speakers, as shown in the figure. Each observer is separated by 1.00 m and Bob is directly in front of speaker 1. The speed of sound is 343 m/s for this problem. Determine which observer or observers will experience constructive interference from the sound emitted by the speakers. Pam Cal Bob Sue Tom Cal Pam Bob Sue Tom 6.00 mAn intensity detector can be moved along a straight track. a source of spherical waves is placed at one end of the track. When the detector is 2 m away from the source, it measures an intensity of 80 W/m2. What distance do we need to move the detector from that position to get a measurement 13 dB lower? Answer: 6.95m