7th Edition

ISBN: 9780321625922

Author: Douglas C. Giancoli

Publisher: Addison-Wesley

Concept explainers

A sound wave is a mechanical wave (or mechanical vibration) that transit through media such as gas (air), liquid (water), and solid (wood).

Quality Of Sound

A sound or a sound wave is defined as the energy produced due to the vibrations of particles in a medium. When any medium produces a disturbance or vibrations, it causes a movement in the air particles which produces sound waves. Molecules in the air vib…

Categories of Sound Wave

People perceive sound in different ways, like a medico student takes sound as vibration produced by objects reaching the human eardrum. A physicist perceives sound as vibration produced by an object, which produces disturbances in nearby air molecules th…

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Textbook Question

Chapter 12, Problem 5Q

What evidence can you give that the speed of sound in air does not depend significantly on frequency?

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Chapter 12, Problem 4Q

Chapter 12, Problem 6Q

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5.77 A block with mass m₁ is placed on an inclined plane with slope angle a and is connected to a hanging block with mass m₂ by a cord passing over a small, frictionless pulley (Fig. P5.74). The coef- ficient of static friction is μs, and the coefficient of kinetic friction is Mk. (a) Find the value of m₂ for which the block of mass m₁ moves up the plane at constant speed once it is set in motion. (b) Find the value of m2 for which the block of mass m₁ moves down the plane at constant speed once it is set in motion. (c) For what range of values of m₂ will the blocks remain at rest if they are released from rest?

5.78 .. DATA BIO The Flying Leap of a Flea. High-speed motion pictures (3500 frames/second) of a jumping 210 μg flea yielded the data to plot the flea's acceleration as a function of time, as shown in Fig. P5.78. (See "The Flying Leap of the Flea," by M. Rothschild et al., Scientific American, November 1973.) This flea was about 2 mm long and jumped at a nearly vertical takeoff angle. Using the graph, (a) find the initial net external force on the flea. How does it compare to the flea's weight? (b) Find the maximum net external force on this jump- ing flea. When does this maximum force occur? (c) Use the graph to find the flea's maximum speed. Figure P5.78 150 a/g 100 50 1.0 1.5 0.5 Time (ms)

5.4 ⚫ BIO Injuries to the Spinal Column. In the treatment of spine injuries, it is often necessary to provide tension along the spi- nal column to stretch the backbone. One device for doing this is the Stryker frame (Fig. E5.4a, next page). A weight W is attached to the patient (sometimes around a neck collar, Fig. E5.4b), and fric- tion between the person's body and the bed prevents sliding. (a) If the coefficient of static friction between a 78.5 kg patient's body and the bed is 0.75, what is the maximum traction force along the spi- nal column that W can provide without causing the patient to slide? (b) Under the conditions of maximum traction, what is the tension in each cable attached to the neck collar? Figure E5.4 (a) (b) W 65° 65°

Chapter 12 Solutions

Physics: Principles with Applications

Ch. 12 - Prob. 1OQ Ch. 12 - Prob. 1Q Ch. 12 - Prob. 2Q Ch. 12 - Prob. 3Q Ch. 12 - When a sound wave passes from air into water, do...Ch. 12 - What evidence can you give that the speed of sound...Ch. 12 - Prob. 6Q Ch. 12 - How will the air temperature in a room affect the...Ch. 12 - Prob. 8Q Ch. 12 - Prob. 9Q

Ch. 12 - 10.A noisy truck approaches you from behind a...Ch. 12 - Prob. 11Q Ch. 12 - Prob. 12Q Ch. 12 - Traditional methods of protecting the hearing of...Ch. 12 - 14- Consider the two waves shown in Fig....Ch. 12 - Is there a Doppler shift if the source and...Ch. 12 - Prob. 16Q Ch. 12 - Prob. 17Q Ch. 12 - Prob. 1MCQ Ch. 12 - Prob. 2MCQ Ch. 12 - Prob. 3MCQ Ch. 12 - Prob. 4MCQ Ch. 12 - Prob. 5MCQ Ch. 12 - Prob. 6MCQ Ch. 12 - Prob. 7MCQ Ch. 12 - Prob. 8MCQ Ch. 12 - Prob. 9MCQ Ch. 12 - Prob. 10MCQ Ch. 12 - Prob. 11MCQ Ch. 12 - Prob. 12MCQ Ch. 12 - Prob. 13MCQ Ch. 12 - Prob. 1P Ch. 12 - Prob. 2P Ch. 12 - (a) Calculate the wavelengths in air at 20°C for...Ch. 12 - Prob. 4P Ch. 12 - An ocean fishing boat is drifting just above a...Ch. 12 - Prob. 6P Ch. 12 - Prob. 7P Ch. 12 - What is the intensity of a sound at the pain level...Ch. 12 - What is the sound level of a sound whose intensity...Ch. 12 - Prob. 10P Ch. 12 - Prob. 11P Ch. 12 - Prob. 12P Ch. 12 - One CD player is said to have a signal-to-noise...Ch. 12 - Prob. 14P Ch. 12 - At a rock concert, a dB meter registered 130 dB...Ch. 12 - Prob. 16P Ch. 12 - If the amplitude of a sound wave is made 3.5 times...Ch. 12 - Prob. 18P Ch. 12 - Prob. 19P Ch. 12 - Prob. 20P Ch. 12 - Prob. 21P Ch. 12 - Prob. 22P Ch. 12 - Prob. 23P Ch. 12 - Prob. 24P Ch. 12 - Prob. 25P Ch. 12 - Prob. 26P Ch. 12 - The A string on a violin has a fundamental...Ch. 12 - Prob. 28P Ch. 12 - (a) What resonant frequency would you expect from...Ch. 12 - If you were to build a pipe organ with open-tube...Ch. 12 - A tight guitar string has a frequency of 540 Hz as...Ch. 12 - Prob. 32P Ch. 12 - 33. (II) An unfingered guitar string is 0.68 m...Ch. 12 - Prob. 34P Ch. 12 - 35. (II) An organ is in tune at 22.0°C. By what...Ch. 12 - How far from the mouthpiece of the flute in...Ch. 12 - (a) At T= 22°C. how long must an open organ pipe...Ch. 12 - A particular organpipe can resonate at 264 Hz, 440...Ch. 12 - Prob. 39P Ch. 12 - Prob. 40P Ch. 12 - Prob. 41P Ch. 12 - Prob. 42P Ch. 12 - Prob. 43P Ch. 12 - The human ear canal is approximately 2.5 cm long....Ch. 12 - Prob. 45P Ch. 12 - Prob. 46P Ch. 12 - A certain dog whistle operates at 23.5 kHz. while...Ch. 12 - Prob. 48P Ch. 12 - A guitar string produces 3 beats/s when sounded...Ch. 12 - Prob. 50P Ch. 12 - Prob. 51P Ch. 12 - Prob. 52P Ch. 12 - Prob. 53P Ch. 12 - Prob. 54P Ch. 12 - Prob. 55P Ch. 12 - Prob. 56P Ch. 12 - Prob. 57P Ch. 12 - Prob. 58P Ch. 12 - As a bat flies toward a wall at a speed of 6.0...Ch. 12 - Prob. 60P Ch. 12 - Prob. 61P Ch. 12 - Prob. 62P Ch. 12 - Prob. 63P Ch. 12 - Prob. 64P Ch. 12 - Prob. 65P Ch. 12 - Prob. 66P Ch. 12 - Prob. 67P Ch. 12 - Prob. 68P Ch. 12 - Prob. 69P Ch. 12 - Prob. 70P Ch. 12 - Prob. 71GP Ch. 12 - Prob. 72GP Ch. 12 - Prob. 73GP Ch. 12 - Prob. 74GP Ch. 12 - Prob. 75GP Ch. 12 - Prob. 76GP Ch. 12 - Prob. 77GP Ch. 12 - Prob. 78GP Ch. 12 - Prob. 79GP Ch. 12 - Prob. 80GP Ch. 12 - Prob. 81GP Ch. 12 - Prob. 82GP Ch. 12 - Prob. 83GP Ch. 12 - Prob. 84GP Ch. 12 - Prob. 85GP Ch. 12 - Prob. 86GP Ch. 12 - Prob. 87GP Ch. 12 - A bat flies toward a moth at speed 7.8 m/s while...Ch. 12 - Prob. 89GP Ch. 12 - Two loudspeakers face each other at opposite ends...Ch. 12 - A sound-insulating door reduces the sound level by...Ch. 12 - Prob. 92GP Ch. 12 - Prob. 93GP Ch. 12 - Prob. 94GP Ch. 12 - Prob. 95GP Ch. 12 - Prob. 96GP

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