21st Century Astronomy And Learning Astronomy By Doing Astronomy (fifth Edition)
5th Edition
ISBN: 9780393613360
Author: Laura Kay, Ana Larson, Stacy Palen, George Blumenthal
Publisher: W. W. Norton & Company
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Question
Chapter 5, Problem 34QP
To determine
The frequency of the sound that the person would hear.
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Students have asked these similar questions
The frequency separating audible waves and ultrasonic waves is considered to be 20 kHz. What wavelength in air at room temperature is associated with this frequency? (Assume the speed of sound to be 340 m/s.)
An individual can hear sound waves from 20 Hz to 20 kHz. If the speed of sound is 340 m/s, what is the wavelength limit of the highest frequency? Answer must be given in cm units.
Find the range of wavelengths emitted by the bat in meters, by using that the speed of sound is c=343m/sec and the range of frequencies from 70 to 30KHz. The solution matches the range of sizes for an insect. What is the order of magnitude for this range? Take this order and call it L for the average size of an insect.
b) If the bat produces a power of P = 10^-5 watts and its hearing threshold is 10^-12 watts/m^2 what is the maximum distance from which the bat can detect an echo?
Chapter 5 Solutions
21st Century Astronomy And Learning Astronomy By Doing Astronomy (fifth Edition)
Ch. 5.1 - Prob. 5.1CYUCh. 5.1 - Prob. 5.2CYUCh. 5.2 - Prob. 5.3CYUCh. 5.3 - Prob. 5.4CYUCh. 5.4 - Prob. 5.5CYUCh. 5.5 - Prob. 5.6CYUCh. 5 - Prob. 1QPCh. 5 - Prob. 2QPCh. 5 - Prob. 3QPCh. 5 - Prob. 4QP
Ch. 5 - Prob. 5QPCh. 5 - Prob. 6QPCh. 5 - Prob. 7QPCh. 5 - Prob. 8QPCh. 5 - Prob. 9QPCh. 5 - Prob. 10QPCh. 5 - Prob. 11QPCh. 5 - Prob. 12QPCh. 5 - Prob. 13QPCh. 5 - Prob. 14QPCh. 5 - Prob. 15QPCh. 5 - Prob. 16QPCh. 5 - Prob. 17QPCh. 5 - Prob. 18QPCh. 5 - Prob. 19QPCh. 5 - Prob. 20QPCh. 5 - Prob. 21QPCh. 5 - Prob. 22QPCh. 5 - Prob. 23QPCh. 5 - Prob. 24QPCh. 5 - Prob. 25QPCh. 5 - Prob. 26QPCh. 5 - Prob. 27QPCh. 5 - Prob. 28QPCh. 5 - Prob. 29QPCh. 5 - Prob. 30QPCh. 5 - Prob. 31QPCh. 5 - Prob. 32QPCh. 5 - Prob. 33QPCh. 5 - Prob. 34QPCh. 5 - Prob. 35QPCh. 5 - Prob. 36QPCh. 5 - Prob. 37QPCh. 5 - Prob. 38QPCh. 5 - Prob. 39QPCh. 5 - Prob. 40QPCh. 5 - Prob. 41QPCh. 5 - Prob. 42QPCh. 5 - Prob. 43QPCh. 5 - Prob. 44QPCh. 5 - Prob. 45QP
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- On a particular day the speed of sound in air is 340 m/s. If a plane flies at a speed of 680 m/s, is its Mach number (a) 1.5, (b) 2.0, (c) 2.5, or (d) 2.7?arrow_forwardWhat is the sound level of a sound wave with intensity 6.40 105 W/m2?arrow_forwardA sound wave in air has a pressure amplitude equal to 4.00 103 Pa. Calculate the displacement amplitude of the wave at a frequency of 10.0 kHz.arrow_forward
- A sound with an intensity level of 30 dB is how many times louder than the threshold of hearing? (6.4) (a) 10 (b) 3000 (c) 100 (d) 1000arrow_forwardThe 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 343m / s ?arrow_forwardThe formula for measuring sound intensity in decibels is defined by the equation D = 10 log(I/I0), where I is the intensity of the sound in watts per square meter and I0 = 10-12 is the lowest level of sound that the average person can hear. How many decibels are emitted from a jet plane with a sound intensity of 8.3 x 102 watts per square meter?arrow_forward
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