A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1.09 × 10³ Hz. The bird-watcher, however, hears afrequency of 1.17 × 103 Hz. What is the speed of the bird, expressed as a percentage of the speed of sound?Number ieTextbook and MediaSave for Later7#C$UnitsווםAttempts: 0 of 3 usedSubmit Answer8EApr 305

The person who hears the noise (the bird watcher) is stationary while the source (the bird) is…

Answered: A bird is flying directly toward a…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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4. An observer is standing on the platform of a railway station. A train goes through the station without stopping. If the frequency of the train whistle decreases by a factor of 1/4 as it approaches and then passes him, calculate the speed of the train (assume the speed of sound in air = 343 m/s).
On the planet Arrakis, a male ornithoid flies toward his female companion at 25.0 m/s while singing at a frequency of 1200 Hz. The stationary female hears a pitch of 1240 Hz. Calculate the speed of sound in the atmosphere of Arrakis.
A bat can detect small objects, such as an insect, whose size is approximately equal to one wavelength of the sound the bat makes. If bats emit a chirp at a frequency of 51.0 kHz, and if the speed of sound in air is 340 m/s, what is the smallest insect a bat can detect?mm
Ocean waves with a wavelength of 40.0 m travel at 5.00 m/s towards a boat at sea. Determine the number of times the boat bobs up and down per minute as a result of encountering the waves.
A convertible moves toward you and then passes you; all the while, its loudspeakers are producing a sound. The speed of the car is a constant 8.93 m/s, and the speed of sound is 342 m/s. What is the ratio of the frequency you hear while the car is approaching to the frequency you hear while the car is moving away? Number Units > #3 C E m/s 7 8 5 % JU 6 וום & e t y u Apr 30 5 6 0
A source emits sound waves isotropically. The intensity of the waves 3.13 m from the source is 1.99 x 104 W/m². Assuming that the energy of the waves is conserved, find the power of the source. Number i Units
The following waveform has been measured at a sweep time of t = 50 + 2%. us ст (7.4 ±0.1) cm The frequency is (2703 + 65) Hz (2.70 ± 51) kHz (300 ± 5) Hz O (270 ± 9) Hz
Express the following in W/m² : 80 dB
A group of hikers hears an echo 3.10 s after shouting. How far away is the mountain that reflected the sound wave? (Assume the speed of sound is 344 m/s.) m
4. A car, sounding its horn, is moving at v. =158.4km / h directly toward a stationary wall in still air. The speed of sound, in the air, is v=330.0 m/s. The horn produces sound at a frequency of f. =1000.Hz (ie. if the car were stationary, that is the frequency you would hear). a) What frequency is heard by an observer at rest at the wall (assume the car is moving straight toward the observer)? b.) What is the wavelength, in the still air, of the sound wave approaching the wall? c) What is the frequency of the reflected sound heard by an occupant of the car?
Two eagles fly directly toward one another, the first at 15.0 m/s and the second at 21.0 m/s. Both screech, the first one emitting a frequency of 2500 Hz and the second one emitting a frequency of 3800 Hz. What frequencies (in Hz) do they receive if the speed of sound is 330 m/s? first eagle Hz second eagle Hz Additional Materials O Reading
7:25 a & Fll 19% YG The lower frequency limit of hearing for a particular human being is 25.3 Hz. What is the corresponding wavelength (in meters) for this frequency if the speed of sound in air is 343 m/s? Select one: а. 1.36 b. 0.07 c. None of the above d. 12.65 е. 13.6 II II

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