College Physics
2nd Edition
ISBN: 9780134601823
Author: ETKINA, Eugenia, Planinšič, G. (gorazd), Van Heuvelen, Alan
Publisher: Pearson,
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Textbook Question
Chapter 11, Problem 27P
Sound wave in Earth A sound wave created by an explosion at Earth's surface is reflected by a discontinuity of some type under Earth’s surface (Figure P11.27 ). Determine the distance from the surface to the discontinuity. Does the discontinuity have a greater or lesser impedance to sound than the surface above it? Explain. Sound travels at about 3000 m/s through the top layer of Earth.
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Chapter 11 Solutions
College Physics
Ch. 11 - How do you produce a longitudinal wave on a...Ch. 11 - Compare and contrast the speed of a vibrating...Ch. 11 - Prob. 3RQCh. 11 - Prob. 4RQCh. 11 - Why is it impossible to create a traveling wave on...Ch. 11 - Your friend says that it is impossible for two...Ch. 11 - Is the following sentence true? When two...Ch. 11 - One end of a horizontal string of length L passes...Ch. 11 - When we studied traveling waves, we decided that...Ch. 11 - An ambulance siren blares continuously as the...
Ch. 11 - What does it mean if the speed of a wave is 300 m...Ch. 11 - 2. What does it mean if the wavelength of a wave...Ch. 11 - 3. If you wish to represent one period of a wave...Ch. 11 - 4. If you wish to graph the disturbance pattern of...Ch. 11 - Which mathematical expression represents a...Ch. 11 - Prob. 6MCQCh. 11 - Prob. 7MCQCh. 11 - 8. Figure Q11.8 shows the...Ch. 11 - Prob. 9MCQCh. 11 - Prob. 10CQCh. 11 - 11. Figure Q11.11 shows a snapshot of two pulses...Ch. 11 - 12. Can a wave have a period of 2.0 s, a speed of...Ch. 11 - 13. What physics ideas were necessary to construct...Ch. 11 - 14. How do you know that the wavelength of a wave...Ch. 11 - What conditions are necessary to create a...Ch. 11 - Invent and describe an experiment to estimate the...Ch. 11 - Prob. 17CQCh. 11 - 18. Describe two useful types of information a...Ch. 11 - 19. 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When you and...Ch. 11 - =100g/m and the middle section is made from rope...Ch. 11 - Show using a sketch and mathematics that the...Ch. 11 - Show using a sketch and mathematics that the...Ch. 11 - 22. * You are standing at position A and your...Ch. 11 - Prob. 23PCh. 11 - Prob. 24PCh. 11 - Prob. 26PCh. 11 - 27. Sound wave in Earth A sound wave created by an...Ch. 11 - A 5.0-kg rope that is 20 m long is woven to an...Ch. 11 - Prob. 29PCh. 11 - Repeat the previous problem for the case where the...Ch. 11 - Prob. 31PCh. 11 - 32. Two waves shown in Figure P11.32 at zero...Ch. 11 - Prob. 33PCh. 11 - 34. * Use Huygens' principle and a wave front...Ch. 11 - Prob. 35PCh. 11 - 36. * You have two synchronously vibrating objects...Ch. 11 - Design Describe an experiment to convince a friend...Ch. 11 - 38. The energy of a sound wave is proportional to...Ch. 11 - Prob. 39PCh. 11 - * Supersonic jet The sound intensity 5 km from the...Ch. 11 - * You are in an open field investigating how sound...Ch. 11 - One loudspeaker is producing a tone of frequency...Ch. 11 - 43. * Tovi is playing a flute and Dawn is playing...Ch. 11 - Music in music a very soft sound called...Ch. 11 - 45. Two sounds differ by 1 dB. What is the...Ch. 11 - 46. Calculate the change in intensity level when a...Ch. 11 - Prob. 47PCh. 11 - 48. 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(a) Can this...Ch. 11 - Car horn A car horn vibrates at a frequency of 250...Ch. 11 - Train whistle A car drives at a speed of 25 m/s...Ch. 11 - 68. * BIO Speed of blood A source of ultrasound...Ch. 11 - 69. * Circular motion sound source A whistle with...Ch. 11 - BIO Bat echo A bat emits short pulses of sound at...Ch. 11 - 105 Hz emits sound waves and detects the same...Ch. 11 - * Violin strings The speed of a wave on a violin A...Ch. 11 - 73. * Use Huygens' principle and a wave front...Ch. 11 - Prob. 74GPCh. 11 - Prob. 75GPCh. 11 - s teammate shouts at her to catch a ball. Estimate...Ch. 11 - 77. ** EST While camping, you record a thunderclap...Ch. 11 - 78. ** BIO Blood speed A red blood cell travels at...Ch. 11 - Prob. 80RPPCh. 11 - 81. If the car from Problem 11.80 is moving at 20...Ch. 11 - 82. Which answer below is closest to the distance...Ch. 11 - Compare your answers to Problems 11.80 and 11.82....Ch. 11 - While your car from Problem 11.80 is stationary,...Ch. 11 - Prob. 85RPPCh. 11 - Prob. 86RPPCh. 11 - 87. What amplifies the air pressure in the ear?
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