Two speakers are located 35.0 cm away. A simple oscillator makes them vibrate in phase at 2 kHz frequency. At what measured angles of the Mediatrix of the segment that joins the speakers, will a distant observer hear the maximum intensity of sound? (Take as fast sound 340 m/s).

Two speakers are located 35.0 cm away. A simple oscillator makes them vibrate in phase at 2 kHz frequency. At what measured angles of the Mediatrix of the segment that joins the speakers, will a distant observer hear the maximum intensity of sound? (Take as fast sound 340 m/s).

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter27: Wave Optics

Section: Chapter Questions

Problem 19P

See similar textbooks

Similar questions

When poked by a spear, an operatic soprano lets out a 1200—Hz shriek. What is its wavelength if the speed of sound is 345 m/s?
A riverside warehouse has several small doors facing the river. Two of these doors are open as shown in Figure P27.17. The walls of the warehouse are lined with sound-absorbing material. Two people stand at a distance L = 150 in from the wall with the open doors. Person A stands along a line passing through the midpoint between the open doors, and person B stands a distance y = 20 m to his side. A boat o the river sounds its horn. To person A, the sound is loud and clear. To person B, the sound is barely audible. The principal wavelength of the sound waves is 5.00 m. Assuming person B is at the position of the first minimum, determine the distance d between the doors, center to center.
The two speakers of a boom box are 40 cm apart. A single oscillator makes the speakers vibrate in phase at the same frequency 2 kHz. At what angles, measured from the perpendicular bisector of the line joining the speakers, would a distant observer hear maximum sound intensity?
(a) What is the speed of sound in a medium where a 100-kHz frequency produces a 5.96-cm wavelength? (b) Which substance is this likely to be?
(a) What is the speed of sound in a medium where a 100-kHz frequency produces a 5.96-cm wavelength? (b) Which substance in the table shown is this likely to be?
Two out of phase loudspeakers are some distance apart. A person stands 5.40 m from one speaker and 3.20 m fromthe other. What is the second lowest frequency at which constructive interference will occur? The speed of sound in air is346 m/s.
The shortest distance between a sound source (S,) and a reflecting wall is 25 m. The sound is reflected at an angle of a, = 45° to a listener (L,). (a) What is the shortest distance between the sound source and the listener, (x1)? (b) The sound is also reflected to another listener (L2) at an angle of a2= 80°. What is the length of the reflector between the two reflection points, (x2)? X2 = ? Reflector a2 a1 L2 L1 S1 X1 = ?
Two loudspeakers, placed on opposite walls of a 10m long room, emit pure sine waves at f= 170 Hz coherently. If we were exactly in the middle of the room, where the interference of waves is constructive, what is the shortest distance we should travel towards one of the speakers so that the waves cancel out completely?" Assume that the speed of sound at air is 340 m/s.
Two identical speakers are initially equal distancesfrom a listener . Thelistener hears a sound maximum (constructiveinterference). When the upper speaker is moved backby a distance d = 2 m, the listener hears a soundminimum (destructive interference). What is thelongest wavelength the soundwaves could have?
An audio system is emitting a sound at a frequency of 676 Hz through two speakers separated by a distance d = 0.620 m. What's the shortest distance for a person to hear maximum intensity if he was facing the speaker on the right (see picture).
Question 4 (a) Write your understanding about coherent waves. (b) A loudspeaker hanging on a long rod radiates sound waves uniformly in all directions. At a distance of 15.0 m from the speaker, the sound intensity is 0.25 W/m². At what distance is the intensity 0.1 W/m²? Question 5 (a) A 1.4-kg 15-cm-diameter solid sphere is rotating about its diameter at 70 rev/min. What is its kinetic energy? (b) Explain why you expect an object made of a stiff material to vibrate at a higher frequency than a similar object made of a more flexible material.
Two powerful speakers, separated by 15.00 m, stand on thefloor in front of the stage in a large amphitheater. An aisle perpendicularto the stage is directly in front of one of the speakers and extends50.00 m to an exit door at the back of the amphitheater. (a) If the speakersproduce in-phase, coherent 440 Hz tones, at how many points along theaisle is the sound minimal? (b) What is the distance between the farthestsuch point and the door at the back of the aisle? (c) Suppose the coherentsound emitted from both speakers is a linear superposition of a 440 Hztone and another tone with frequency f. What is the smallest value of fso that minimal sound is heard at any point where the 440 Hz sound isminimal? (d) At how many additional points in the aisle is the 440 Hztone present but the second tone is minimal? (e) What is the distancefrom the closest of these points to the speaker at the front of the aisle?