1. The hearing range of a normal human ear is from 20 to 20000 Hz. If the speed of the sound in air is 340 m/s, what are the shortest and the longest wavelengths that the human ear can hear? 2. If the speed of wave in passing from medium A to medium B doubles while keeping the frequency constant, what happens to the wavelength? 3. Suppose that two-point charges, each with a charge of +1.00 Coulomb are separated by a distance of 1.00 meter. Determine the magnitude of the electrical force of repulsion between them.

1. The hearing range of a normal human ear is from 20 to 20000 Hz. If the speed of the sound in air is 340 m/s, what are the shortest and the longest wavelengths that the human ear can hear? 2. If the speed of wave in passing from medium A to medium B doubles while keeping the frequency constant, what happens to the wavelength? 3. Suppose that two-point charges, each with a charge of +1.00 Coulomb are separated by a distance of 1.00 meter. Determine the magnitude of the electrical force of repulsion between them.

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter16: Waves

Section: Chapter Questions

Problem 43P: (a) Seismographs measure the arrival times of earthquakes with a precision of 0.100 s. To get the...

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For items 1-2, choose only one correct answer. 1. What is the speed of sound when the temperature is 39°C in aluminum? A. 5119.2 m/s B. 5122.2 m/s C. 5123.4 m/s D. 5127.4 m/s 2. What is the gravitational field strength in N/kg on the surface of the sun? Given: r= 6.96x10^8 m m= 1.99x10^30 kg A. 1.6 B. 9.8 C. 127 D. 274
Item 9 Learning Goal: To learn the properties of logarithms and how to manipulate them when solving sound problems. The intensity of sound is the power of the sound waves divided by the area. on which they are incident. Intensity is measured in watts per square meter, or W/m². The human ear can detect a remarkable range of sound intensities. The quietest sound that we can hear has an intensity of 10-12 W/m², and we begin to feel pain when the intensity reaches 1 W/m². Since the intensities that matter to people in everyday life cover a range of 12 orders of magnitude, intensities are usually converted to a logarithmic scale called the sound intensity level 3, which is measured in decibels (dB). For a given sound intensity I, B is found from the equation B = (10 dB) log (1) where Io = 1.0 × 10-12 W/m². Part A What is the value of log (1,000,000)? Express your answer as an integer. ► View Available Hint(s) The logarithm of x, written log(x), tells you the power to which you would raise…
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Item 9 Learning Goal: To learn the properties of logarithms and how to manipulate them when solving sound problems. The intensity of sound is the power of the sound waves divided by the area on which they are incident. Intensity is measured in watts per square meter, or W/m². The human ear can detect a remarkable range of sound intensities. The quietest sound that we can hear has an intensity of 10-¹2 W/m², and we begin to feel pain when the intensity reaches 1 W/m². Since the intensities that matter to people in everyday life cover a range of 12 orders of magnitude, intensities are usually converted to a logarithmic scale called the sound intensity level 3, which is measured in decibels (dB). For a given sound intensity I, B is found from the equation ß = (10 dB) log (1). where Io = 1.0 × 10-¹2 W/m². Part A What is the value of log(1,000,000)? Express your answer as an integer. ► View Available Hint(s) The logarithm of x, written log(x), tells you the power to which you would raise 10…
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A VOcaro0 | Ohline vo.. se Mirsal The Ri.. alió ö Lio Demo document Liveworksheets.co... chnological College Apps Social networks Tihe ocedures Useful Links► Help» This module * Participants » Sulaiman based on Chapter-11 sics 2 What is the frequency of the sound wave in the air when the temperature is 350 K and the wavelength is 0.7 m? (Use speed of sound at 0 C = 331 m/s) of Select one: а. 350 Hz estion b. 245 Hz c. 535.40 Hz Previous page Next page Chapter-12 Optics► actice Quiz Experiment-1, T-2, AY Jump to... 20-21
Determine the intensity of a 119-dB sound. The intensity of the reference level required to determine the sound level is 1.0×10−12W/m2. A. Express your answer to two significant figures and include the appropriate units. B. Determine the intensity of a 21-dBsound. Express your answer to two significant figures and include the appropriate units.
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