The formant frequencies of speech are also influenced by the density of the propagatingmedium. The human vocal tract is approximately 17 cm long. What is the first and secondformants of this voice? The velocity of sound in air is Vair-331m/s. Write your answerswith 1 decimal place. (Hint: How can you use the length of the vocal tract to find thefrequency?)Hz (1st formant)Hz (2nd formant)Divers working deep in the ocean breathe a mixture of gases, of which 97 % is helium (12).

Given data The length of the human vocal tract is given as L = 17 cm. The velocity of the air is…

Answered: The formant frequencies of speech are…

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)...

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Part A What fundamental frequency would you expect from blowing across the top of an empty soda bottle that is 24 cmcm deep, if you assumed it was a closed tube? The speed of sound in air is 343 m/sm/s. Express your answer to two significant figures and include the appropriate unitsPart B What fundamental frequency would you expect if the bottle was filled with soda for height of 11 cmcm ? Express your answer to two significant figures and include the appropriate units.
If the fundamental frequency of a tube is 784 Hz, and the speed of sound is 343 m/s, determine the length of the tube (in m) for each of the following cases. 1. the tube is closed at one end 2. the tube closed at both ends
PROVE: Inverse Square Law for Sound A law of physics states that the intensity of sound is inversely proportional to the square of the distance d from the source: 1 = k/d?. (a) Use this model and the equation B = 10 log (described in this section) to show that the decibel levels B and B, at distances d and d, from a sound source are related by the equation di B = B + 20 log dz (b) The intensity level at a rock concert is 120 dB at a dis- tance 2 m from the speakers. Find the intensity level at a distance of 10 m.
Biologists think that some spiders "tune" strands of their web to give enhanced response at frequencies corresponding to those at which desirable prey might struggle. Orb spider web silk has a typical diameter of 20 μm, and spider silk has a density of 1300 kg/m³. To have a fundamental frequency at 150 Hz, to what tension must a spider adjust a 20 cm - long strand of silk? Express your answer with the appropriate units. T. = μÅ Value Units Review ?
There is a tube of length 1.0 m with one end closed. You clapped your hand at the mouth of the tube once. The echo of the clap came back after 6.0 milliseconds. What is the velocity of sound in the tube ? 330 m/s O 320 m/s 290 m/s O 170 m/s
The softest sound a human ear can hear is at 0 dB (Io = 10-12 W/m2). Sounds above 130 dB cause pain. A particular student's eardrum has an area of A = 51 mm^2. a. What is the most power, in watts, the ear can receive before the listener feels pain? b. What is the smallest power, in watts, the ear can detect?
3 rces The sound of normal breathing is not very loud, with an intensity of about 11 dB at a distance of 1 m away from the face of the breather. Note that in this problem sound intensity in decibels is denoted 3; intensity in W/m² is denoted I View Available Hint(s) distance Ddetect in meters. Ddetect = 3.16 m Submit Previous Answers ✓ Correct Part B In general, if a sound has intensity of 3 dB at 1 m from the source, at what distance de from the source would the decibel level decrease to 0 dB? Since the limit of hearing is 0 dB this would mean you could no longer hear it. Express the distance in terms of B. Be careful about your signs! View Available Hint(s) Submit IVE] ΑΣΦ do 3.55 3 Previous Answers X Incorrect; Try Again; 5 attempts remaining < Return to Assignment Provide Feedback P Pearson m Copyright © 2022 Pearson Education Inc. All rights reserved. | Terms of Use | Privacy Policy | Permissions | Contact Us |
Chapter 17, Problem 020 The figure shows four isotropic point sources of sound that are uniformly spaced on an x axis. The sources emit sound at the same wavelength and same amplitude sm, and they emit in phase. A point P is shown on the x axis. Assume that as the sound waves travel to P, the decrease in their amplitude is negligible. What multiple of sm is the amplitude of the net wave at P if distance d in the figure is (a)1A, (b)2, and (c)4/? (a) Number (b) Number (c) Number Units Units Units S₁ Sa Sa + S₁
An ambulance with a siren emitting a whine at 1730 Hz overtakes and passes a cyclist pedaling a bike at 2.60 m/s. After being passed, the cyclist hears a frequency of 1722 Hz. How fast is the ambulance moving? (Take the speed of sound in air to be 343 m/s.) Number i Units
Q2
The first harmonic of a series created by a standing air wave in a tube open at one end only is 36.9 Hz. If the length of the tube is 235 cm, calculate the speed of sound of the air. Use two digits of precision for your answer. Your Answer: + Answer
Part B A52-dB sound wave strikes an eardrum whose area is 5.0 x 10m The intensity of the reference level required to determine the sound level is 1.0 x 10-1 W/m 1 yr 3.156 x 107s At this rate, how long would it take the eardrum to receive a total energy of 1.0 J? Express your answer using two significant figures. ΑΣΦ t 3D yr Submit Request Answer Previous の hp hp f5 f6 f7 f8

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