How do I answer 1 and 2 - Sound Wave Calculations-11398379 0ew Insert Format Tools Add-ons HelpLast edit was made 2 days ago by Daniel TrevisanBIUA.D 田回▼Arial12%3D100%Normal textf= 1/Tv= A/Tv = Af1. Suppose that a block is oscillating once every 4.0 seconds. What is thefrequency?F=1/T =% =0.25 Hz2. A speaker is producing a 250 Hz note. What is the period of motion of thespeaker?f= 250 HzT=?E = 1/TT= 1/f = 1/250 s = 0.004s3. What is the wave speed if an 82 Hz note has a wavelength of 4.0 meters?A = 4 mf= 82 HzV =?v = Af = 4 x 82 =324 m/sSupport| Schoology Blog | PRIVACY POLICY

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What is the period of motion of the

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter15: Sound

Section: Chapter Questions

Problem 29A

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(a) Ear trumpets were never very common, but they did aid people with hearing losses by gathering sound over a large area and concentrating it on the smaller area of the eardrum. What decibel increase does an ear trumpet produce it its sound gathering area is 900 cm2 and the area of the eardrum is 0.500 cm2, but the trumpet only has an eficiency of 5.00% in transmitting the sound to the eardrum? (b) Comment on the usefulness of the decibel increase found in part (a).
Orchestra instruments are commonly tuned to match an A-note played by the principal oboe. The Baltimore Symphony Orchestra tunes to an A-note at 440 Hz while the Boston Symphony Orchestra tunes to 442 Hz. If the speed of sound is constant at 343 m/s, find the magnitude of difference between the wavelengths of these two different A-notes.
What sound intensity levels must sounds of frequencies 60,3000, and 8000 Hz have in order to have the same loudness as a 40dB sound of frequency 1000 Hz (that is, to have a loudness of 40 phons)?
Sound is more effectively transmitted into a stethoscope by direct contact than through the air, and it is further intensi?ed by being concentrated on the smaller area of the eardrum. It is reasonable to assume that sound is transmitted into a stethoscope 100 times as effectively compared with transmission though the air. What, then, is the gain in decibels produced by a stethoscope that has a sound gathering area at 15.0 cm2, and concentrates the sound onto two eardrums with a total area of 0.900 cm2 with an efficiency of 40.0%?
How can you determine that the speed of sound is the same for all frequencies by listening to a band orchestra?
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The ear canal resonates like a tube closed at one end. (See [link]Figure 17_03_HumEar[/link].) If ear canals range in length from 1.80 to 2.60 cm in an average population, what is the range of fundamental resonant frequencies? Take air temperature to be 37.0°C, which is the same as body temperature.
(a) What are the loudnesses in phons of sounds having frequencies of 200, 1000, 5000, and 10,000 Hz. if they are all at the same 60.0dB sound intensity level? (b) If may are all at 110 dB? (c) If they are all at 20.0 dB?
Suppose a person has a 50—UB hearing loss at all frequencies. By how many factors of 10 will low—intensity sounds need to be ampli?ed to seem normal to this person? Note that smaller amplification is appropriate for more intense sounds to avoid further hearing damage.
Is it possible to create a situation in which there is only destructive interference? Explain.
What frequency sound has a 0.10m wavelength when the speed of sound is 340 m/s?
How long must a fiute be in order to have a fundamental frequency of 262 Hz this frequency corresponds to middle C on the evenly tempered chromatic scale) on a day when air temperature is 20.0°C? It is open at both ends.