Two loudspeakers in a plane are 2.0 m apart and in phase with each other. Both emit 700 Hz sound waves into a room where the speed of sound is 341 m/s. A listener stands 5.0 m in front of the loudspeakers and 2.0 m to one side of the center. a)ls the interference at this point maximum constructive, maximum destructive, or in between? b)How will the situation differ if the loudspeakers are out of phase? Step 1: SKETCH the situation. Step 2: Draw the distance r₁ from source 1 to the point and the distance r₂ from source 2 to the point Step 3: Find 1 and 2, then calculate Ar. Step 4: Find the wavelength Step 5:Find the phase difference at that point.
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- Question 1TI What are the three longest wavelengths for standing sound waves in a 100-cm-long tube under the following conditions. The tube is open at both ends. Express your answer in meters and separated by commas. View Available Hint(s) |IVE ΑΣΦ A2.00, 1.00,6.66 You have already submitted this answer. Enter a new answer. No credit lost. Try again. Submit Part B Previous Answers ? The tube is open at one end closed at the other? mTwo speakers are against a wall emitting a sound at 767 Hz, 14 m apart, and facing each other. You are standing against the wall in between the speakers. Use 344ms for the speed of sound in air. A) What is the closest distance that you can be from the speaker on the left at which you exprerience total destructive interference, and the sound from the speakers cancel out? B) What is the closest distance that you can be from the speaker on the left at which you experrience total constructive interference, and the sound intensity is doubled?
- Problem 6 - GPS W2 Two speakers (see Figure) are separated by a distance d=1m and emit sound wave of frequency f=1kHz. (in air, sound = 340 m/s). The speakers are considered as point sources. (a) Calculate the smallest angle theta for constructive interferences. (b) If D=30m, at what locations z should an observer stands to hear constructive interferences (i.e. maximum sound)? (c) At what locations z should observers stand to hear no sound. CE-d sine E ZIn 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—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
- 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 UnitsSound with a 29 cm wavelength travels rightward from a source and through a tube that consists of a straight portion and a half-circle. Part of the soundwave travels through the circle and rejoins the the rest of the wave which goes directly through the straight portion. This rejoining results in interference. What is the smallest radius r (in cm) that results in an intensity minimum at the detector. The maximum destructive interference will occur when the difference in the distance travelled by the two waves is 1/2 of a wavelength. To solve this problem express the difference in the distance travelled by the two waves as a function of r and set this amount equal to 1/2 of a wavelength.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 200 Hz. The waves travel in opposite directions in a sound studio, are reflected by end walls, and return. The studio is 50.0 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.
- Item 12 IP Two violinists, one directly behind the other, play for a listener directly in front of them. Both violinists sound concert A (440 Hz). Part A What is the smallest separation between the violinists that will produce destructive interference for the listener? d = Submit Part B —| ΑΣΦ Request Answer increases Submit Does this smallest separation increase or decrease if the violinists produce a note with a higher frequency? decreases ? Request Answer ma0cm- Im - 0.2m 100cm 11. Gaston has a vocal tract that is 20cm long. Nanal carity 1la. What is the wavelength of his first harmonic (j.e. the lowest pitch or frequency that he can make, which is also the longest possible wavelength)? Oral cavity V-340mls 4. =0.8ml %3D 3. 4 (0.2m)=0.8m Vocal folds %3D 11b. What is the frequency of this particular sound? v: Amfm 8=425 Hz = 340mls 0.8 -425 H2 11c. What is the wavelength of his 2nd harmonic? d2=? L- MAm 2270.4m A2=10.2m) = 0,4m %3DAt a temperature of 20.0o two speakers are sending sound waves of frequency 512 Hz and 2048 Hz respectively toward a door opening of width 90.0 cm. Which wave frequency experiences a greater diffraction angle upon passing through the opening? Group of answer choices a.the 512 Hz b.the 2048 Hz c.both about the same