College Physics (10th Edition)
10th Edition
ISBN: 9780321902788
Author: Hugh D. Young, Philip W. Adams, Raymond Joseph Chastain
Publisher: PEARSON
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Chapter 12, Problem 38P
Find the noise level (in dB) of a sound having an intensity of (a) 0.000127 W/m2, (b) 6.53 × 10−10 W/cm2, (c) 1.5 × 10−14 W/m2.
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Chapter 12 Solutions
College Physics (10th Edition)
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One of the 63.5-cm-long strings of...Ch. 12 - Prob. 21PCh. 12 - Find the fundamental frequency and the frequency...Ch. 12 - The longest pipe found in most medium-sized pipe...Ch. 12 - The fundamental frequency of a pipe that is open...Ch. 12 - The role of the mouth in sound. The production of...Ch. 12 - The end of a stopped pipe is to be cut off so that...Ch. 12 - Prob. 27PCh. 12 - Singing in the shower! Assume that your shower is...Ch. 12 - You blow across the open mouth of an empty test...Ch. 12 - Two small speakers A and B are driven in step at...Ch. 12 - In a certain home sound system, two small speakers...Ch. 12 - Prob. 32PCh. 12 - Human hearing. The human outer ear contains a more...Ch. 12 - Ultrasound and infrasound. (a) Whale...Ch. 12 - A 75.0 cm wire of mass 5.625 g is tied at both...Ch. 12 - A small omnidirectional stereo speaker produces...Ch. 12 - Find the intensity (in W/m2) of (a) a 55.0 dB...Ch. 12 - Find the noise level (in dB) of a sound having an...Ch. 12 - (a) By what factor must the sound intensity be...Ch. 12 - Eavesdropping! You are trying to overhear a juicy...Ch. 12 - Energy delivered to the ear. Sound is detected...Ch. 12 - (a) If the amplitude in a sound wave is tripled,...Ch. 12 - A baseball park is filled with 5000 home-team...Ch. 12 - (a) What is the sound intensity level in a car...Ch. 12 - A trumpet player is tuning his instrument by...Ch. 12 - Two tuning forks are producing sounds of...Ch. 12 - Two guitarists attempt to play the same note of...Ch. 12 - Tuning a violin. A violinist is tuning her...Ch. 12 - A railroad train is traveling at 25.0 m/s in still...Ch. 12 - Two train whistles, A and B, each have a frequency...Ch. 12 - On the planet Arrakis, a male ornithoid is flying...Ch. 12 - You are driving down the road at 15.6 m/s (35 mph)...Ch. 12 - A railroad train is traveling at 30.0 m/s in still...Ch. 12 - The siren of a fire engine that is driving...Ch. 12 - A stationary police car emits a sound of frequency...Ch. 12 - A container ship is traveling westward at a speed...Ch. 12 - While sitting in your car by the side of a country...Ch. 12 - Moving source vs. moving listener. (a) A sound...Ch. 12 - How fast (as a percentage of light speed) would a...Ch. 12 - One end of a 14.0-m-long wire having a total mass...Ch. 12 - Ultrasound in medicine. A 2.00 MHz sound wave...Ch. 12 - A very noisy chain saw operated by a tree surgeon...Ch. 12 - Tuning a cello. A cellist tunes the C-string of...Ch. 12 - A bat flies toward a wall, emitting a steady sound...Ch. 12 - The sound source of a ships sonar system operates...Ch. 12 - The range of human hearing. A young person with...Ch. 12 - A person leaning over a 125-m-deep well...Ch. 12 - Prob. 68GPCh. 12 - A small musical toy produces a steady tone at 1000...Ch. 12 - A turntable 1.50 m in diameter rotates at 75 rpm....Ch. 12 - Musical scale. The frequency ratio of a semitone...Ch. 12 - BIO Waves on vocal cords. In the larynx, sound is...Ch. 12 - BIO Waves on vocal cords. In the larynx, sound is...Ch. 12 - BIO Waves on vocal cords. In the larynx, sound is...Ch. 12 - If the deepest structure you wish to image is 10.0...Ch. 12 - After a beam passes through 10 cm of tissue, what...Ch. 12 - Because the speed of ultrasound in bone is about...Ch. 12 - BIO Waves on vocal cords. In the larynx, sound is...Ch. 12 - For cranial ultrasound, why is it advantageous to...
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