Conceptual Physical Science Explorations

2nd Edition

ISBN: 9780321567918

Author: Paul G. Hewitt, Leslie A. Hewitt, John A Suchocki

Publisher: Addison Wesley

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Shock Waves

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Textbook Question

Chapter 12, Problem 8RQ

How does the speed of sound in water compare with the speed of sound in air? How does the speed in steel compare with the speed in air?

Expert Solution & Answer

To determine

The comparison between speed of sound in water with the speed of sound in air and the speed of sound in steel with the speed in air.

Answer to Problem 8RQ

The speed of sound in water is four times faster as compared to the speed of sound in air and the speed of sound in steel is fifteen times faster as compared to the speed of sound in air.

Explanation of Solution

A sound wave travels in a medium as the particles vibrate. Sound takes some amount of time to move, depending upon certain factors such as temperature, humidity, and the medium. The speed of the sound while in the air is comparatively slower than that in water. It is so because the molecules of water are closer as compared to the air.

The speed of sound in water is approximately 4 time faster than that in the air. The molecules are compactly packed in the case of steel. So the speed of sound in steel is approximately 15 time faster as compared to the speed of sound air.

Conclusion:

Therefore, the speed of sound in water is four time faster as compared to the speed of sound in air, and the speed of sound in steel is fifteen times faster as compared to the speed of sound in air.

Chapter 12, Problem 7RQ

Chapter 12, Problem 9RQ

Chapter 12 Solutions

Conceptual Physical Science Explorations

Ch. 12 - What is the source of all waves?Ch. 12 - How do the frequency and period relate to each...Ch. 12 - What is it that moves from source to receiver in...Ch. 12 - What is the relationship among frequency,...Ch. 12 - In a transverse wave, in what direction are the...Ch. 12 - In a longitudinal wave, in what direction are the...Ch. 12 - Why will sound not travel in a vacuum?Ch. 12 - How does the speed of sound in water compare with...Ch. 12 - How does the angle of incidence compare with the...Ch. 12 - What is the reverberation?

Ch. 12 - Prob. 11RQ Ch. 12 - Does sound tend to bend upward or downward when...Ch. 12 - Why does a struck tuning fork sound louder when it...Ch. 12 - Give three examples of forced vibration.Ch. 12 - Distinguish between forced vibrations and...Ch. 12 - When you listen to a radio, why are you able to...Ch. 12 - What kind of waves exhibit interference?Ch. 12 - Distinguish between constructive interference and...Ch. 12 - In the Doppler effect, does frequency change? Does...Ch. 12 - Can the Doppler effect be observed with...Ch. 12 - How does the V-shape of a bow wave depend on the...Ch. 12 - How does the V-shape of a shock wave depend on the...Ch. 12 - True or False: A sonic boom occurs only when an...Ch. 12 - True or False: In order for an object to produce a...Ch. 12 - Prob. 1PC Ch. 12 - Prob. 2PC Ch. 12 - Find the speed of a wave with a frequency of 3Hz...Ch. 12 - Find the speed of a wave with frequency of 340Hz...Ch. 12 - The waves below have the same frequency...Ch. 12 - A fire engine sounds its siren as it approaches...Ch. 12 - If we double the frequency of a vibrating object,...Ch. 12 - If the frequency of the sound wave is doubled,...Ch. 12 - Red light has longer wavelength than blue light....Ch. 12 - You dip your finger repeatedly into a puddle of...Ch. 12 - Why will marchers at the end of a long parade...Ch. 12 - What two physics mistakes occur in a science...Ch. 12 - A cat can hear sound frequencies up to 70,000 Hz....Ch. 12 - You notice smoke from the starter's gun at a...Ch. 12 - In an Olympic competition, a microphone picks up...Ch. 12 - Sound from Source A has twice the frequency of...Ch. 12 - If the speed of sound depended on frequency, how...Ch. 12 - Why is an echo weaker than the original sound?Ch. 12 - What is the danger posed by people in the balcony...Ch. 12 - What physical principle is used by Manuel when he...Ch. 12 - Would there a Doppler effect if the source of...Ch. 12 - When you blow your horn while driving toward a...Ch. 12 - Astronomers find that light coming from one edge...Ch. 12 - Does the conical angle of a shock wave open wider,...Ch. 12 - If the sound of an airplane does not originate in...Ch. 12 - Why is it that a subsonic aircraft, no matter how...Ch. 12 - A weight suspended from a spring bobs up and down...Ch. 12 - From far away you watch a woman driving nails into...Ch. 12 - A skipper on a boat notices waves crests passing...Ch. 12 - An oceanic depthsounding vessel surveys the ocean...Ch. 12 - A bat flying in a cave emits a sound and receives...Ch. 12 - What frequency of sound produces a wavelength of...Ch. 12 - When we consider the distance a pendulum swings to...Ch. 12 - If the frequency of a particular wave is 30Hz, its...Ch. 12 - In Europe, alternating electric current vibrates...Ch. 12 - If you dip your finger repeatedly onto the surface...Ch. 12 - The vibrations along a longitudinal wave move in a...Ch. 12 - A common example of a transverse wave is (a)...Ch. 12 - When your radio set is tuned to an incoming radio...Ch. 12 - When sound or light undergoes interference, it can...Ch. 12 - What does NOT occur with the Doppler effect are...Ch. 12 - A sonic boom is the result of wave (a)...

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