Student Workbook for Physics for Scientists and Engineers: A Strategic Approach, Vol 1. (Chs 1-21)
4th Edition
ISBN: 9780134110646
Author: Randall D. Knight (Professor Emeritus)
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
thumb_up100%
Chapter 16, Problem 43EAP
A bat locates insects by emitting ultrasonic “chirps” and then listening for echoes from the bugs. Suppose a bat chirp has a frequency of 25 kHz. How fast would the bat have to fly, and in what direction, for you to just barely be able to hear the chirp at 20 kHz?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
On a 20°C°C night, a bat hovering in the air emits an ultrasonic chirp that has a
frequency of 45 kHzkHz. It hears an echo 60 msms later.
Suppose the object is an insect flying straight away from the bat. What is the
insect's speed if the ultrasonic echo is shifted down in frequency by 750 Hz?
An ultrasonic scan uses the echo waves coming from something moving (such as the beating heart of a fetus) inside the body and the waves that are directly received from the transmitter to form a measurable beat frequency. This allows the speed of the internal structure to be isolated and analyzed. The speed of the ultrasound waves in tissue is about 1540 m/s.
What is the beat frequency ?beats detected when waves with a frequency of 3.80 MHz are used to scan a fetal heartbeat (moving at a speed of ±8.50 cm/s)?
hint that came with it:
In this problem there's a stationary source of ultrasound that reflects sound off of a moving object which then returns back to the ultrasound device to measure the frequency. There are 2 Doppler shifts that need to be considered. First the stationary source and the moving observer. Second, when the sound reflects off, the moving object now becomes the source and the ultrasound device becomes the observer. In this shift, the frequency measured by the…
A bat is using echolocation to find insects at night. If the bat emits a high frequency chirp and hears an echo 0.031 s later, how far away is the insect? The temperature of the air that night is 24°C.
Chapter 16 Solutions
Student Workbook for Physics for Scientists and Engineers: A Strategic Approach, Vol 1. (Chs 1-21)
Ch. 16 - Prob. 1CQCh. 16 - A wave pulse trath along a stretched string at a...Ch. 16 - FIGURE Q16.3 is a history graph showing the...Ch. 16 - FIGURE Q16.4 shows a snapshot graph and a history...Ch. 16 - Rank in order, from largest to smallest, the...Ch. 16 - A sound wave with wavelength ?0 and frequency...Ch. 16 - Prob. 7CQCh. 16 - FIGURE Q16.8 is a snapshot graph of a sinusoidal...Ch. 16 - FIGURE Q16.9 shows the wave fronts of a circular...Ch. 16 - Prob. 10CQ
Ch. 16 - One physics professor talking produces a sound...Ch. 16 - You are standing at x = 0 m, listening to a sound...Ch. 16 - The wave speed on a string under tension is 200...Ch. 16 - The wave speed on a string is 150 m/s when the...Ch. 16 - A 25 g string is under 20 N of tension. A pulse...Ch. 16 - Draw the history graph D(x = 4.0 m, t ) at x = 4.0...Ch. 16 - Prob. 5EAPCh. 16 - Draw the snapshot graph D (x, t = 0 s) at t = 0 s...Ch. 16 - Prob. 7EAPCh. 16 - Prob. 8EAPCh. 16 - Prob. 9EAPCh. 16 - A wave has angular frequency 30 rad/s and...Ch. 16 - A wave travels with speed 200 m/s. Its wave number...Ch. 16 - Prob. 12EAPCh. 16 - The displacement of a wave traveling in thee...Ch. 16 - What are the amplitude, frequency and wavelength...Ch. 16 -
15. Show that the displacement D(x, t) cx2 + dt2,...Ch. 16 - Show that the displacement D(x, t) = ln(ax + bt),...Ch. 16 - a. What is the wavelength of a 2.0 MHz ultrasound...Ch. 16 - Prob. 18EAPCh. 16 - Prob. 19EAPCh. 16 - Prob. 20EAPCh. 16 - Prob. 21EAPCh. 16 - Prob. 22EAPCh. 16 - 23. Cell phone conversations are transmitted by...Ch. 16 - a. How long does it take light to travel through a...Ch. 16 - A light wave has a 670 nm wavelength in air. Its...Ch. 16 - Prob. 26EAPCh. 16 - Prob. 27EAPCh. 16 - Prob. 28EAPCh. 16 - Prob. 29EAPCh. 16 - Prob. 30EAPCh. 16 - Prob. 31EAPCh. 16 - Prob. 32EAPCh. 16 - A sound wave with intensity 2.0 × l0-3 W/m2 is...Ch. 16 - Prob. 34EAPCh. 16 - Prob. 35EAPCh. 16 - During takeoff, the sound intensity level of a jet...Ch. 16 - 37. The sun emits electromagnetic waves with a...Ch. 16 - What are the sound intensity levels for sound...Ch. 16 - Prob. 39EAPCh. 16 - Prob. 40EAPCh. 16 - Prob. 41EAPCh. 16 - Prob. 42EAPCh. 16 - A bat locates insects by emitting ultrasonic...Ch. 16 - Prob. 44EAPCh. 16 - 45. I FIGURE P16.45 is a history graph at x = 0 m...Ch. 16 - . I FIGURE P16.46 is a snapshot graph at t=0sof a...Ch. 16 - Prob. 47EAPCh. 16 - Prob. 48EAPCh. 16 - Prob. 49EAPCh. 16 - A helium-neon laser beam has a wavelength in air...Ch. 16 - Earthquakes are essentially sound waves—called...Ch. 16 - Helium (density 0.18k/m ’ at 0C and 1 atm...Ch. 16 - Prob. 53EAPCh. 16 - 54. A sound wave is described by ,where y is in m...Ch. 16 - A wave on a string is described by...Ch. 16 - Prob. 56EAPCh. 16 - Prob. 57EAPCh. 16 - Prob. 58EAPCh. 16 - Prob. 59EAPCh. 16 - The string in FIGURE P16.60 has linear density ....Ch. 16 - A string that is under 50.0N of tension has linear...Ch. 16 - Prob. 62EAPCh. 16 - A sinusoidal wave travels along a stretched...Ch. 16 - Prob. 64EAPCh. 16 - Prob. 65EAPCh. 16 - An AM radio station broadcasts with a power of...Ch. 16 - Prob. 67EAPCh. 16 - The sound intensity 50m from a wailing tornado...Ch. 16 - Prob. 69EAPCh. 16 - 70. A compact sound source radiates of sound...Ch. 16 - Prob. 71EAPCh. 16 - Prob. 72EAPCh. 16 - Prob. 73EAPCh. 16 - Prob. 74EAPCh. 16 - Prob. 75EAPCh. 16 - Prob. 76EAPCh. 16 - Prob. 77EAPCh. 16 - A starship approaches its home planet at a speed...Ch. 16 - Prob. 79EAPCh. 16 - Prob. 80EAPCh. 16 - Prob. 81EAPCh. 16 - A roof mass m and length L hangs from a ceiling....Ch. 16 - A communications truck with a 44-cm-diameter dish...Ch. 16 - Prob. 84EAPCh. 16 - A water wave is a shallow-water wave if the water...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- Female Aedes aegypti mosquitoes emit a buzz at about 4.00102 Hz, whereas male A. aegypti mosquitoes typically emit a buzz at about 6.00102 Hz. As a female mosquito is approaching a stationary male mosquito, is it possible that he mistakes the female for a male because of the Doppler shift of the sound she emits? How fast would the female have to be traveling relative to the male for him to make this mistake? Assume the speed of sound in the air is 343 m/s.arrow_forwardSome 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_forwardA tuning fork is known to vibrate with frequency 262 Hz. When it is sounded along with a mandolin siring, four beats are heard every second. Next, a bit of tape is put onto each line of the tuning fork, and the tuning fork now produces five beats per second with the same mandolin siring. What is the frequency of the string? (a) 257 Hz (b) 258 Hz (c) 262 Hz (d) 266 Hz (e) 267 Hzarrow_forward
- A taut rope has a mass of 0.180 kg and a length of 3.60 m. What power must be supplied to the rope so as to generate sinusoidal waves having an amplitude of 0.100 m and a wavelength of 0.500 m and traveling with a speed of 30.0 m/s?arrow_forwardA sound wave traveling in air has a pressure amplitude of 0.5 Pa. What is the intensity of the wave?arrow_forward(a) At an air show a jet flies directly toward the stands at a speed of 1200 km/h, emitting a frequency of 3500 Hz, on a day when the speed of sound is 342 m/s. What frequency is received by the observers? (b) What frequency do they receive as the plane flies directly away from them?arrow_forward
- The area of a typical eardrum is about 5.00 X 10-5 m2. (a) (Calculate the average sound power incident on an eardrum at the threshold of pain, which corresponds to an intensity of 1.00 W/m2. (b) How much energy is transferred to the eardrum exposed to this sound lor 1.00 mill?arrow_forwardA string with a mass of 0.30 kg has a length of 4.00 m. If the tension in the string is 50.00 N, and a sinusoidal wave with an amplitude of 2.00 cm is induced on the string, what must the frequency be for an average power of 100.00 W?arrow_forwardA 512-Hz tuning fork is struck and placed next to a tube with a movable piston, creating a tube with a variable length. The piston is slid down the pipe and resonance is reached when the piston is 115.50 cm from the open end. The next resonance is reached when the piston is 82.50 cm from the open end. (a) What is the speed of sound in the tube? (b) How far from the open end will the piston cause the next mode of resonance?arrow_forward
- The equation of a harmonic wave propagating along a stretched string is represented by y(x, t) = 4.0 sin (1.5x 45t), where x and y are in meters and the time t is in seconds. a. In what direction is the wave propagating? be. N What are the b. amplitude, c. wavelength, d. frequency, and e. propagation speed of the wave?arrow_forwardA sound wave can be characterized as (a) a transverse wave, (b) a longitudinal wave, (c) a transverse wave or a longitudinal wave, depending on the nature of its source, (d) one that carries no energy, or (e) a wave that does not require a medium to be transmitted from one place to the other.arrow_forwardAs you travel down the highway in your car, an ambulance approaches you from the rear at a high speed (Fig. OQ13.15) sounding its siren at a frequency of 500 Hz. Which statement is correct? (a) You hear a frequency less than 500 Hz. (b) You hear a frequency equal to 500 Hz. (c) You hear a frequency greater than 500 Hz. (d) You hear a frequency greater than 500 Hz, whereas the ambulance driver hears a frequency lower than 500 Hz. (e) You hear a frequency less than 500 Hz, whereas the ambulance driver hears a frequency of 500 Hz. Figure OQ13.15arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
University Physics Volume 1PhysicsISBN:9781938168277Author:William Moebs, Samuel J. Ling, Jeff SannyPublisher:OpenStax - Rice University
Glencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-Hill
Physics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning
College PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax College
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
University Physics Volume 1
Physics
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:OpenStax - Rice University
Glencoe Physics: Principles and Problems, Student...
Physics
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Glencoe/McGraw-Hill
Physics for Scientists and Engineers, Technology ...
Physics
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:OpenStax College
What Are Sound Wave Properties? | Physics in Motion; Author: GPB Education;https://www.youtube.com/watch?v=GW6_U553sK8;License: Standard YouTube License, CC-BY