Suppose that the separation between two speakers A and B is 4.60 m and the speakers are vibrating in-phase. They are playing identical 119-Hz tones and the speed of sound is 343 m/s. An observer is seated at a position directly facing speaker Bin such a way that his line of sight extending to B is perpendicular to the imaginary line between A and B. What is the largest possible distance between speaker B and the observer, such that he observes destructive interference?

Suppose that the separation between two speakers A and B is 4.60 m and the speakers are vibrating in-phase. They are playing identical 119-Hz tones and the speed of sound is 343 m/s. An observer is seated at a position directly facing speaker Bin such a way that his line of sight extending to B is perpendicular to the imaginary line between A and B. What is the largest possible distance between speaker B and the observer, such that he observes destructive interference?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

i need the answer quickly
Solve Apo = 0 Submit ✓ Correct Because constructive interference is observed when Ar = 0, that is, when the listener is equidistant from the sources, the speakers must be sources of in-phase waves. Part C Find v, the speed of the sound waves in air. Express your answer in meters per second to three significant figures. ► View Available Hint(s) v = 351 m/s Submit Previous Answers Review Part D T₂ = Previous Answers Correct How far (r.) from its original location should the speaker be moved for the listener to experience constructive interference for the second time? Express your answer in meters to three significant figures. ► View Available Hint(s) OF IVE ΑΣΦ ? m
In the figure, sound waves A and B, both of wavelength 12.0 m, are initially in phase and traveling rightward. They each reflect several times but end up traveling in their original direction. What is the second smallest value (m) of d that puts A and B exactly out of phase with each other after the reflections? A B d 2d |—a—
Two small slits are in a thick wall, 27.5 cm apart. A sound source from the behind the wall emits a sound wave toward the wall at a frequency of 2,000 Hz. Assume the speed of sound is 342 m/s. (a) Find the (positive) angle (in degrees) between the central maximum and next maximum of sound intensity. Measure the angle from the perpendicular bisector of the line between the slits. ° (b) The sound source is now replaced by a microwave antenna, emitting microwaves with a wavelength of 2.75 cm. What would the slit separation (in cm) have to be in order to give the same angle between central and next maximum of intensity as found in part (a)? cm (c) The microwave antenna is now replaced by a monochromatic light source. If the slit separation were 1.00 µm, what frequency (in THz) of light would give the same angle between the central and next maximum of light intensity? THz
The back wall of an auditorium is 26.0 m from the stage. If you are seated in the middle row, how much time elapses between a sound from the stage reaching your ear directly and the same sound reaching your ear after reflecting from the back wall?
1Two sources are in phase with one another and emit waves with a wavelength of 0.42 meters. Find outwhether the interference is constructive or destructive at sites with the following distances betweenthe two sources: (a) 0.84 and 0.42 m [2]; (b) 0.21 and 0.42 m[2]; (c) 1.26 and 0.42 m[2]; (d) 1.87 and1.45 m [2]; (e) 0.63 and 0.84 m [2]; and (f) 1.47 and 1.26 m [2]
An interface is formed between a block of aluminium (with an acoustic impedance of 1.8 x 107 kg m2 s') and a block of copper (with an acoustic impedance of 4.6 x 107 kg m-2 s-1). Longitudinal sound waves travelling through the aluminium are normally incident on the boundary, and are partially reflected. a) What is the ratio of the amplitude of the reflected wave to that of the incident wave? Number b) What is the ratio of the amplitude of the transmitted wave to that of the incident wave? Number c) What percentage of the incident power is transmitted? Number d) What percentage of the incident power is reflected? Number % Ouit P Sove Questi
Consider the speaker set-up in the previous question. Each speaker emits a frequency of 6.6·102 Hz in phase with the other. The listener is seated directly in front of one speaker, 1.6 m away. The speakers are 2.4 m away from each other. How many extra wavelengths are needed for sound to get from speaker 2 to the listener? Take the speed of sound in air to be 3.4·102 m/s.
answer fast I will give upvotes \What acoustic frequency is required of a plane acoustic wave in an acousto-optic cell so that a beam from a He-Ne laser is deflected by ? Consider the case of (a) flint glass for which the sound velocity is 3km/s and n=1.95 and (b) sapphire crystal with the sound velocity of 11km/s and n=1.76.
A stereo speaker is placed between two observers who are 167 m apart, along the lineconnecting them.If one observer records an intensity level of 58.2 dB, and the other records an intensitylevel of 61.2 dB, how far is the speaker fromthe closer observer?Answer in units of m
Suppose that the two waves in the figure have wavelength 451 nm in air. What multiple of A gives their phase difference when they emerge if (a) n₁1.68 and n₂-1.78, and L-7.67 um: (b) n₁-180 and n₂-1.90, and L-7.67 μm; and (c) ny-1.77 and n-1.97, and L- 3.39 pm My My (a) Number (b) Number (c) Number Units Units Units