General Physics, 2nd Edition
2nd Edition
ISBN: 9780471522782
Author: Morton M. Sternheim
Publisher: WILEY
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Chapter 22, Problem 58E
To determine
Theincrease in percentage of power required to raise the intensity level to
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Chapter 22 Solutions
General Physics, 2nd Edition
Ch. 22 - Prob. 1RQCh. 22 - Prob. 2RQCh. 22 - Prob. 3RQCh. 22 - Prob. 4RQCh. 22 - Prob. 5RQCh. 22 - Prob. 6RQCh. 22 - Prob. 7RQCh. 22 - Prob. 8RQCh. 22 - Prob. 9RQCh. 22 - Prob. 10RQ
Ch. 22 - Prob. 11RQCh. 22 - Prob. 1ECh. 22 - Prob. 2ECh. 22 - Prob. 3ECh. 22 - Prob. 4ECh. 22 - Prob. 5ECh. 22 - Prob. 6ECh. 22 - Prob. 7ECh. 22 - Prob. 8ECh. 22 - Prob. 9ECh. 22 - Prob. 10ECh. 22 - Prob. 11ECh. 22 - Prob. 12ECh. 22 - Prob. 13ECh. 22 - Prob. 14ECh. 22 - Prob. 15ECh. 22 - Prob. 16ECh. 22 - Prob. 17ECh. 22 - Prob. 18ECh. 22 - Prob. 19ECh. 22 - Prob. 20ECh. 22 - Prob. 21ECh. 22 - Prob. 22ECh. 22 - Prob. 23ECh. 22 - Prob. 24ECh. 22 - Prob. 25ECh. 22 - Prob. 26ECh. 22 - Prob. 27ECh. 22 - Prob. 28ECh. 22 - Prob. 29ECh. 22 - Prob. 30ECh. 22 - Prob. 31ECh. 22 - Prob. 32ECh. 22 - Prob. 34ECh. 22 - Prob. 35ECh. 22 - Prob. 36ECh. 22 - Prob. 37ECh. 22 - Prob. 38ECh. 22 - Prob. 39ECh. 22 - Prob. 40ECh. 22 - Prob. 41ECh. 22 - Prob. 42ECh. 22 - Prob. 43ECh. 22 - Prob. 44ECh. 22 - Prob. 45ECh. 22 - Prob. 46ECh. 22 - Prob. 47ECh. 22 - Prob. 48ECh. 22 - Prob. 49ECh. 22 - Prob. 50ECh. 22 - Prob. 51ECh. 22 - Prob. 52ECh. 22 - Prob. 53ECh. 22 - Prob. 54ECh. 22 - Prob. 55ECh. 22 - Prob. 56ECh. 22 - Prob. 57ECh. 22 - Prob. 58ECh. 22 - Prob. 59ECh. 22 - Prob. 60ECh. 22 - Prob. 61ECh. 22 - Prob. 62ECh. 22 - Prob. 63ECh. 22 - Prob. 64ECh. 22 - Prob. 65ECh. 22 - Prob. 66ECh. 22 - Prob. 67ECh. 22 - Prob. 68ECh. 22 - Prob. 69E
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- Some 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_forwardSound with intensity larger than 120 dB appears painful to a person. A speaker delivers 280 W of audio output. How close can the person get to the speaker without feeling pain?arrow_forwardThe average depth of penetration of an ultra-sound wave of the frequency f = 800 kHz in tissue is 4 cm. The initial intensity of this wave was 10 W/m2. What will the intensity of this wave be at the depth x = 120 mm?arrow_forward
- A loudspeaker on a tall pole broadcasts sound waves equally in all directions. What is the speaker’s power output if the sound intensity level is 109 dB at a distance of 23 m?arrow_forwardA weather emergency siren is mounted on a tower, 153 m above the ground. On one hand, it would be a good idea to make the siren very loud so that it will warn as many people as possible. On the other hand, safety regulations prohibit the siren from exceeding an intensity level of 101 dB for workers standing on the ground directly below the siren. Assuming that the sound is uniformly emitted, what is the maximum power that the siren can put out? maximium power output: W * TOOLS х10 How far away from the bas and still be able to hear the siren? Neglect any absorption of sound energy by the air; although, in reality, such absorption would be significant at long distances. maximum audible distance: marrow_forwardThe loudest sound produced by a living organism on Earth is made by the bowhead whale (Balaena mysticetus). These whales can produce a sound that, if heard in air at a distance of 2.60 mm , would have an intensity level of 157 dBdB . This is roughly the equivalent of 5000 trumpeting elephants. How far away can you be from a 157 dBdB sound and still just barely hear it?(Assume a point source, and ignore reflections and absorption.)arrow_forward
- High‑intensity focused ultrasound (HIFU) is one treatment for certain types of cancer. During the procedure, a narrow beam of high‑intensity ultrasound is focused on the tumor, raising its temperature to nearly 90∘C and killing it. A range of frequencies and intensities can be used, but in one treatment a beam of frequency 3.60 MHz. produced an intensity of 1400.0 W/cm2. The energy was delivered in short pulses for a total time of 2.70 s. over an area measuring 1.20 mm by 5.20 mm. The speed of sound in the soft tissue was 1580 m/s, and the density of that tissue was 1500.0 kg/m3. What was the wavelength ? of the ultrasound beam? How much energy ?total was delivered to the tissue during the 2.70s treatment?arrow_forwardAn interface is formed between a block of aluminium (with an acoustic impedance of 1.8 x 107 kg m2 s') and a block of copper (with an acoustic impedance of 4.6 x 107 kg m-2 s-1). Longitudinal sound waves travelling through the aluminium are normally incident on the boundary, and are partially reflected. a) What is the ratio of the amplitude of the reflected wave to that of the incident wave? Number b) What is the ratio of the amplitude of the transmitted wave to that of the incident wave? Number c) What percentage of the incident power is transmitted? Number d) What percentage of the incident power is reflected? Number % Ouit P Sove Questiarrow_forwardThe howler monkey is the loudest land animal and can be heard up to a distance of 4.9 km. Assume the acoustic output of a howler to be uniform in all directions. The acoustic power emitted by the howler, in mW, is closest to:arrow_forward
- A weather emergency siren is mounted on a tower, 153 m above the ground. On one hand, it would be a good idea to make the siren very loud so that it will warn as many people as possible. On the other hand, safety regulations prohibit the siren from exceeding an intensity level of 101 dB for workers standing on the ground directly below the siren. Assuming that the sound is uniformly emitted, what is the maximum power that the siren can put out? maximium power output: 3530 W Incorrect How far away from the base of the tower can a person be and still be able to hear the siren? Neglect any absorption of sound energy by the air; although, in reality, such absorption would be significant at long distances. maximum audible distance: 16733.2 Incorrect about us privacy policy terms of use help careers contact usarrow_forwardA stereo amplifier is rated at 225 W output at 1000 Hz. The power output drops by 12 dB at 15 kHz. What is the power output in watts at 15 kHz?arrow_forwardA certain source of sound waves radiates uniformly in all directions. At a distance of 20 m from the source the intensity level is 51 db. What is the total acoustic power output of the source, in watts? (Note: The reference intensity I0 is 1.0 × 10-12 W/m².) Give your numerical answer in Watts.arrow_forward
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