COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 13, Problem 101QAP
To determine
(a)
The bulk modulus of helium at
To determine
(b)
The frequency of sound when the respiratory tract is filled with Helium.
To determine
(c)
Reason for person's sound changes as he breath in Helium.
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The speed of sound in a gas at T= 100°C is equal to 386.9 m/s. If the temperature of the gas is doubled, then the
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Chapter 13 Solutions
COLLEGE PHYSICS
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- A sound wave traveling in air has a pressure amplitude of 0.5 Pa. What is the intensity of the wave?arrow_forwardTable 17.1 shows the speed of sound is typically an order of magnitude larger in solids than in gases. To what can this higher value be most directly attributed? (a) the difference in density between solids and gases (b) the difference in compressibility between solids and gases (c) the limited size of a solid object compared to a free gas (d) the impossibility of holding a gas under significant tensionarrow_forwardA pipe is observed to have a fundamental frequency of 345 Hz. Assume the pipe is filled with air (v = 343 m/s). What is the length of the pipe if the pipe is a. closed at one end and b. open at both ends?arrow_forward
- Based on the graph in Figure 17.36, what is the threshold of hearing in decibels for frequencies of 60, 400, 1000, 4000, and 15,000 Hz? Note that many AC electrical appliances produce 60 Hz, music is commonly 400 Hz, a reference frequency is 1000 Hz, your maximum sensitivity is near 4000 Hz, and many older TVs produce a 15,750 Hz whine. Figure 17.36 The relationship of loudness in phons to intensity level (in decibels) and intensity (in watts per meter squared) for persons with normal hearing. The curved lines are equal-loudness curves—all sounds on a given curve are perceived as equally loud. Phons and decibels are defined to be the same at 1000 Hz.arrow_forwardSome studies suggest that the upper frequency limit of hearing is determined by the diameter of the eardrum. The wavelength of the sound wave and the diameter of the eardrum are approximately equal at this upper limit. If the relationship holds exactly, what is the diameter of the eardrum of a person capable of hearing 20 000 Hz? (Assume a body temperature of 37.0C.)arrow_forwardA sound wave in air has a pressure amplitude equal to 4.00 103 Pa. Calculate the displacement amplitude of the wave at a frequency of 10.0 kHz.arrow_forward
- A 500-Hz sound travels through pure oxygen. The wavelength of the sound is measured to be 0.65 m. What is the speed of sound in oxygen?arrow_forwardWhat percent of patients artery is blocked? you are working in a cardiac unit an are tasked to determine the percentage of blockage in a patients carotid artery. For this patient you know the average blood velocity for a non blocked artery is 30 cm/s. Using Doppler ultrasound you measure the blood velocity in your patient to be 90 cm/s at the fastest position along the carotid artery. about what percent of the patients artery is blocked?arrow_forwardThe coldest and hottest temperatures ever recorded in Switzerland are -43.2°F (231 K) and 106.7°F (315 K), respectively. What is the speed of sound in air (in m/s) at each temperature? speed of sound at -43.2°F m/s speed of sound at 106.7°F m/sarrow_forward
- The speed of sound in a certain monatomic gas is 320 m/s at room temperature (20℃). What gas is this?arrow_forward1:26 ull : O qiven that the density of air 1.20 kg/m"3 and the speed of sound 343 m/s* A vacuum cleaner produces sound with a measured sound level of 70.0 dB. (a) What is the intensity of this sound in W/m²? (b) What is the pressure amplitude of the sound?arrow_forwardQ.2: Calculate the difference in the speeds of sound in air at -3°C, 60 cm pressure of mercury and 30°C, 75 cm pressure of mercury. The speed of sound in air at 0°C is 332 m/s.arrow_forward
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