EBK PHYSICAL UNIVERSE
15th Edition
ISBN: 9780100255036
Author: KRAUSKOPF
Publisher: YUZU
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 7, Problem 12E
To determine
The distance between the girl and the Aero plane when the sound seems to come from overhead.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A diver below the surface of a lake hears the sound of the siren of a boat on the surface just above him; at the same time, a friend who is on land 22.0 m from the boat also hears the sound.
The siren is 1.2 m above the surface of the water. How far away (marked with "?" in the figure) is the diver?
Take the speed of sound in air as 344 m/s and in water as 1493 m/s.
A bat flying at 4.65 m/s is chasing an insect flying in the same direction. The bat emits a 39.9-kHz chirp and receives back an echo at 40.6 kHz. (Take the speed of sound in air to be v = 343 m/s.)
(a) What is the speed of the insect? m/s(b) Will the bat be able to catch the insect?
YesNo
Explain.
We stand in front of a wall. Between us and the wall, at the height of our ears, there is a whistleblowing, at a frequency of 600Hz. How fast must the whistle go towards the wall so that we can hear 3 beats per second?
Chapter 7 Solutions
EBK PHYSICAL UNIVERSE
Ch. 7 - Prob. 1MCCh. 7 - Prob. 2MCCh. 7 - Prob. 3MCCh. 7 - Prob. 4MCCh. 7 - Prob. 5MCCh. 7 - Prob. 6MCCh. 7 - Prob. 7MCCh. 7 - Prob. 8MCCh. 7 - Prob. 9MCCh. 7 - Six flutes playing together produce a 60-dB sound....
Ch. 7 - Prob. 11MCCh. 7 - Prob. 12MCCh. 7 - Maxwell based his theory of electromagnetic (em)...Ch. 7 - In a vacuum the speed of an em wave a. depends...Ch. 7 - Prob. 15MCCh. 7 - Prob. 16MCCh. 7 - Prob. 17MCCh. 7 - Light waves a. require air or another gas to...Ch. 7 - Prob. 19MCCh. 7 - The ionosphere is a region of ionized gas in the...Ch. 7 - Prob. 21MCCh. 7 - Prob. 22MCCh. 7 - Prob. 23MCCh. 7 - Prob. 24MCCh. 7 - Prob. 25MCCh. 7 - Prob. 26MCCh. 7 - Prob. 27MCCh. 7 - Prob. 28MCCh. 7 - Prob. 29MCCh. 7 - Prob. 30MCCh. 7 - Prob. 31MCCh. 7 - Prob. 32MCCh. 7 - Prob. 33MCCh. 7 - Thin films of oil and soapy water owe their...Ch. 7 - The sky is blue because a. air molecules are blue...Ch. 7 - Diffraction refers to a. the splitting of a beam...Ch. 7 - The useful magnification of a telescope is limited...Ch. 7 - Prob. 38MCCh. 7 - The speed of sound waves having a frequency of 256...Ch. 7 - The wavelength of sound waves having a frequency...Ch. 7 - Prob. 41MCCh. 7 - Prob. 42MCCh. 7 - Prob. 43MCCh. 7 - Prob. 44MCCh. 7 - Prob. 45MCCh. 7 - (a) Distinguish between longitudinal and...Ch. 7 - Prob. 2ECh. 7 - Water waves whose crests are 6 m apart reach the...Ch. 7 - Water waves are approaching a lighthouse at a rate...Ch. 7 - At one end of a ripple tank 90 cm across, a 6-Hz...Ch. 7 - A 1.2-MHz ultrasonic beam is used to scan body...Ch. 7 - Why does sound travel fastest in solids and...Ch. 7 - The speed of sound in a gas depends upon the...Ch. 7 - Even if astronauts on the moons surface did not...Ch. 7 - What eventually becomes of the energy of sound...Ch. 7 - A person is watching as spikes are being driven to...Ch. 7 - Prob. 12ECh. 7 - Find the frequency of sound waves in air whose...Ch. 7 - Prob. 14ECh. 7 - Prob. 15ECh. 7 - A violin string vibrates 1044 times per second....Ch. 7 - Prob. 17ECh. 7 - A double star consists of two nearby stars that...Ch. 7 - The characteristic wavelengths of light emitted by...Ch. 7 - Why are light waves able to travel through a...Ch. 7 - How could you show that light carries energy?Ch. 7 - Prob. 22ECh. 7 - Prob. 23ECh. 7 - Which of the following waves cannot be polarized:...Ch. 7 - Prob. 25ECh. 7 - Prob. 26ECh. 7 - Visible light of which color has the lowest...Ch. 7 - A radar signal took 2.7 s to go to the moon and...Ch. 7 - An opera performance is being broadcast by radio....Ch. 7 - Prob. 30ECh. 7 - A nanosecond is 109 s. (a) What is the frequency...Ch. 7 - A radar sends out 0.05-s pulses of microwaves...Ch. 7 - Prob. 33ECh. 7 - Prob. 34ECh. 7 - Prob. 35ECh. 7 - Prob. 36ECh. 7 - Can the index of refraction of a substance be less...Ch. 7 - Prob. 38ECh. 7 - When a fish looks up through the water surface at...Ch. 7 - A flashlight at the bottom of a swimming pool...Ch. 7 - Prob. 41ECh. 7 - The olive in a cocktail (n = 1.35) seems to be 30...Ch. 7 - Prob. 43ECh. 7 - Prob. 44ECh. 7 - What is the difference between a real image and a...Ch. 7 - A coin is placed at a focal point of a converging...Ch. 7 - Prob. 47ECh. 7 - Prob. 48ECh. 7 - Prob. 49ECh. 7 - Prob. 50ECh. 7 - Prob. 51ECh. 7 - Prob. 52ECh. 7 - Prob. 53ECh. 7 - The candle of Exercise 53 is 15 cm from the lens....Ch. 7 - Prob. 55ECh. 7 - Prob. 56ECh. 7 - Prob. 57ECh. 7 - Prob. 58ECh. 7 - (a) What is the name of the defect of vision in...Ch. 7 - Prob. 60ECh. 7 - When white light is dispersed by a glass prism,...Ch. 7 - Prob. 62ECh. 7 - Prob. 63ECh. 7 - If the earth had no atmosphere, what would the...Ch. 7 - Prob. 65ECh. 7 - Prob. 66ECh. 7 - Prob. 67ECh. 7 - Prob. 68ECh. 7 - Radio waves are able to diffract readily around...Ch. 7 - A radar operating at a wavelength of 3 cm is to...Ch. 7 - Prob. 71ECh. 7 - At night the pupils of a certain womans eyes are 8...
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
- During a thunderstorm, a frightened child is soothed by learning to estimate the distance to a lightning strike by counting the time between seeing the lightning and hearing the thunder (Fig. P2.25). The speed vs of sound in air depends on the air temperature, but assume the value is 343 m/s. The speed of light c is 3.00 108 m/s. a. A child sees the lightning and then counts to eight slowly before hearing the thunder. Assume the light travel time is negligible. Estimate the distance to the lightning strike. b. Using your estimate in part (a), find the light travel time. Is it fair to neglect the light travel time? c. Think about how time was measured in this problem. Is it fair to neglect the difference between the speed of sound in cold air (vs at 0C = 331.4 m/s) and the speed of sound in very warm air (vs at 40C = 355.4 m/s)?arrow_forwardAn airplane is flying at Mach 1.50 at an altitude of 7500.00 meters, where the speed of sound is v=343.00 m/s. How far away from a stationary observer will the plane be when the observer hears the sonic boom?arrow_forwardA bat flying at 5.05 m/s is chasing an insect flying in the same direction. The bat emits a 39.8-kHz chirp and receives back an echo at 40.6 kHz. (Take the speed of sound in air to be v = 343 m/s.) (a) What is the speed of the insect? m/s(b) Will the bat be able to catch the insect? Yes No Explain.arrow_forward
- A GPS satellite is moving with a line of sight relative velocity of 3600m/s to a receiver. What is the Doppler shift to the centre frequency caused by this movement on the L1 and L2 signals from the satellite at the receiver?arrow_forwardTwo space ships are attempting a docking maneuver and are relaying their coordinates to each other as they get closer together. The communication officers of each ship announce the coordinates at the same instant the coordinates are transmitted to the other ship. The ships are 51 km apart. We wish to find whether the ships receive each others' coordinates first, or whether the other shipmates hear their communications officer first, given that the shipmates are within 2.5 meters of their respective communications officers. The speed of sound is 343 m/s. How long does it take for the sound to reach the shipmates? How long does it take for the light to reach one ship from another? Therefore, which happens first? O The ships receive the signal first. O Other ship mates hear the sound first. Additional Materials Readingarrow_forwardThis is possibly a different atmosphere from ours. In any case, the speed of sound is computer-generated, and is 454 m/s this time. Light travels for us instantaneously. You see a lightning flash, and 7.6 seconds later, you hear the thunderbolt. How far away was the lightning (in meters)?arrow_forward
- During a cricket game one fan is located directly behind wickets, 18.3 m from the batter and a second fan, is located in the centerfield bleachers, 127 m from the batter. Both fans observe the batter strike the ball at the same time (because the speed of light is about a million times faster than that of sound), but the fan behind home plate hears the sound first. a) What is the time difference between hearing the sound at the two locations? Use 345 m/s as the speed of sound. b) As the batter hits the ball at a speed of 43,556 m/s and a 220 Hz sound is emitted. If the ball moves in the direction of the first fan what frequency would she observe?arrow_forwardA bat flying at 4.65 m/s is chasing an insect flying in the same direction. The bat emits a 39.9-kHz chirp and receives back an echo at 40.6 kHz. (Take the speed of sound in air to be v = 343 m/s.) (a) What is the speed of the insect?arrow_forwardA physicist at a fireworks display times the lag between seeing an explosion and hearing its sound, and finds it to be 0.371 s. How far away in meters is the explosion if air temperature is 24.0°C and if you neglect the time taken for light to reach the physicist? Assume the speed of sound in 0°C air is 331 m/s. Type your answer.....arrow_forward
- the reflection of sound is often heard as an echo. if a person claps her hands and hears an echo off a wall 0.25s later, how far away is the wall? the speed of sound is 300ms^-1.arrow_forwardA mirror faces a cliff located some distance away. Mounted on the cliff is a second mirror, directly opposite the first mirror and facing toward it. A gun is fired very close to the first mirror. The speed of sound is 342 m/s. How many times does the flash of the gunshot travel the round-trip distance between the mirrors before the echo of the gunshot is heard? N = i ✪arrow_forwardA spacecraft landing on the Moon uses the Doppler effect on radar signals transmitted at a frequency of 5 GHz to determine the landing speed. The pilot discovers that the precision of the radar instrument has deteriorated to ±100 Hz. Is this adequate to ensure a safe landing? [Speed of light 300,000 kms-.]arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- University Physics Volume 1PhysicsISBN:9781938168277Author:William Moebs, Samuel J. Ling, Jeff SannyPublisher:OpenStax - Rice UniversityPrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning
- Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and Engineers with Modern ...PhysicsISBN:9781337553292Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
University Physics Volume 1
Physics
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:OpenStax - Rice University
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
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
Physics for Scientists and Engineers
Physics
ISBN:9781337553278
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Physics for Scientists and Engineers with Modern ...
Physics
ISBN:9781337553292
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning