The figure shows an air-filled, acoustic interferometer, used to demonstrate the interference of sound waves. Sound source S is anoscillating diaphragm; D is a sound detector, such as the ear or a microphone. Path SBD can be varied in length, but path SAD is fixed. AtD, the sound wave coming along path SBD interferes with that coming along path SAD. In one demonstration, the sound intensity at Dhas a minimum value of 82.0 units at one position of the movable arm and continuously climbs to a maximum value of 1000 units whenthat arm is shifted by 2.44 cm. Find (a) the frequency of the sound emitted by the source and (b) the ratio of the amplitude at D of theSAD wave to that of the SBD wave. (Take the speed of sound to be 343 m/s.)(a) Number iUnits(b) NumberiUnits+

To solve this problem, we'll need to understand the concept of destructive and constructive…

Answered: The figure shows an air-filled,…

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 38P

See similar textbooks

Similar questions

What is the necessary condition on the path length difference between two waves that interfere (a) constructively and (b) destructively?
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.
an airfilled, acoustic interferometer, used to demonstrate the interference of sound waves. Sound source S is an oscillating diaphragm; D is a sound detector, such as the ear or a microphone. Path SBD can be varied in length, but path SAD is fixed. At D, the sound wave coming along path SBD interferes with that coming along path SAD. In one demonstration, the sound intensity at D has a minimum value of 100 units at one position of the movable arm and continuously climbs to a maximum value of 900 units when that arm is shifted by 1.65 cm. Find (a) the frequency of the sound emitted by the source and (b) the ratio of the amplitude at D of the SAD wave to that of the SBD wave. (c) How can it happen that these waves have different amplitudes, considering that they originate at the same source?
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 waves Y1-6.3 sin (3297 t-0.0765 x + 8x) and Y2-8.3 sin (3297 t-0.0765 x + 9%) interfere. Compute: (a) the frequency (f) of cach wave, and (b) the wavelength (A.) of cach wave (All quantities are in SI units)
A speaker has a diameter of 0.30 m. (a) Assuming that the speed of sound is 343 m/s, find the diffraction angle u for a 2.0-kHz tone. (b) What speaker diameter D should be used to generate a 6.0-kHz tone whose diffraction angle is as wide as that for the 2.0-kHz tone in part (a)?
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.
Imagine you are in an open field where two loudspeakers are set up and connected to the same amplifier so that they emit sound waves in phase at 688 HzHz. Take the speed of sound in air to be 344 m/sm/s. What is the shortest distance d you need to walk forward to be at a point where you cannot hear the speakers? The forward direction is defined as being perpendicular to a line joining the two speakers and you start walking from the line that joins the two speakers.
A spherical power light source of (7.566x10^1) watts is (6.1000x10^-1) metres from a photodiode detector of area (4.70x10^-1) cm². Find the power at the detector, in watts, to 3 sf. Hint find the intensity of the wave at the detector first.
A person in a whispering gallery standing at one focus of the ellipse can whisper and be heard by a person standing at the other focus because all the sound waves that reach the ceiling are reflected to the other person. If a whispering gallery has a length of 68 meters, and the foci are located 16 meters from the center, find the height of the ceiling at the center.
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 individual can hear sound waves from 20 Hz to 20 kHz. If the speed of sound is 340 m/s, what is the wavelength limit of the highest frequency? Answer must be given in cm units.

SEE MORE QUESTIONS

Recommended textbooks for you

Principles of Physics: A Calculus-Based Text

Physics

ISBN:

9781133104261

Author:

Raymond A. Serway, John W. Jewett

Publisher:

Cengage Learning

University Physics Volume 1

Physics

ISBN:

9781938168277

Author:

William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:

OpenStax - Rice University

Physics for Scientists and Engineers, Technology …

Physics

ISBN:

9781305116399

Author:

Raymond A. Serway, John W. Jewett

Publisher:

Cengage Learning

Principles of Physics: A Calculus-Based Text

Physics

ISBN:

9781133104261

Author:

Raymond A. Serway, John W. Jewett

Publisher:

Cengage Learning

University Physics Volume 1

Physics

ISBN:

9781938168277

Author:

William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:

OpenStax - Rice University

Physics for Scientists and Engineers, Technology …

Physics

ISBN:

9781305116399

Author:

Raymond A. Serway, John W. Jewett

Publisher:

Cengage Learning

SEE MORE TEXTBOOKS