3. Signal M is 6.8 dB louder than signal W. What is the ratio of the sound intensity of signal M to signal W? M= 6.8W M:W W=W 6.8dB: 1dB Aahhu 4.780 G D 4. The noise from a grinder in a factory is 32,000 times more powerful than the noise from a dishwasher. By how many decibels is the factory noise greater than the dishwasher noise? GiD 32,000:1 FF 5. On a good night, the front row of the Foo Fighters concert would surely result in a 110 dB sound level. A police siren produces about 90 dB. How many police sirens would be needed to produce the same intensity as the front row of the Foo Fighters concert? S B2₂ =110 B₁=90 2 B₁₂ - B₁ = 1010g (1/2) (푶) 6. A loud sound is 90 dB. When the sound is reduced to 5% of its original intensity, what is the decibel level? 3=90

3. Signal M is 6.8 dB louder than signal W. What is the ratio of the sound intensity of signal M to signal W? M= 6.8W M:W W=W 6.8dB: 1dB Aahhu 4.780 G D 4. The noise from a grinder in a factory is 32,000 times more powerful than the noise from a dishwasher. By how many decibels is the factory noise greater than the dishwasher noise? GiD 32,000:1 FF 5. On a good night, the front row of the Foo Fighters concert would surely result in a 110 dB sound level. A police siren produces about 90 dB. How many police sirens would be needed to produce the same intensity as the front row of the Foo Fighters concert? S B2₂ =110 B₁=90 2 B₁₂ - B₁ = 1010g (1/2) (푶) 6. A loud sound is 90 dB. When the sound is reduced to 5% of its original intensity, what is the decibel level? 3=90

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter17: Physics Of Hearing

Section: Chapter Questions

Problem 68PE: (a) Find the intensity in watts per meter squared of a 60.0Hz sound having a loudness of 60 phons....

See similar textbooks

Similar questions

A tuning fork vibrates producing sound at a frequency of 512 Hz. The speed of sound of sound in air is v=343.00 m/s if the air is at a temperature of 20.00°C . What is the wavelength of the sound?
A sound wave traveling in air has a pressure amplitude of 0.5 Pa. What is the intensity of the wave?
The highest frequency sound humans can hear is about 20,000 HzHz. 1. What is the wavelength of sound in air at this frequency? 2. What is the wavelength of the lowest sounds we can hear, about 20 HzHz?
3. The VE3KBR transmitter near Tokyo broadcasts on a frequency of 146.940 MHz. The transmitter is broadcasting a test sound that is picked up by a nearby amateur radio. The test sound has a frequency of 1 kHz and a wavelength of 33 cm. a) What is the wavelength of the transmitter’s radio wave (in metres)? b) What is the speed of the sound wave that is coming out of the radio (in m/s)?
Light travels approximately 3.0 x 10³ m/s in outer space. If yellow light from the sun has a wavelength of 5.70x10 11 m what is its frequency? Select one: a. 5.26 Hz b. o.000526 Hz c. 5.26 x10^18 Hz d. .00000526HZ
The frequency of the middle A note on a piano is 440.00 Hz. What is the wavelength of this note in centimeters? The speed of sound in air is 343.06 m/s. ?=
What is the frequency of a wave which has a period of57500 s?2.A.0.00001386 HzD.0.00001908 HzB.0.00001739 HzE.0.00001775 HzC.0.00002115 HzF.0.00001999 Hz
and 4.00 m from the other? Ans. 4.1 rad 7. A bat flies toward a wall at a speed of 5.0 m/s. As it flies, the bat emits an ultrasonic sound wave with frequency 30 kHz. What frequency does the bat hear in the reflected wave? 8 The solution of travelling wave v(cos(kx - wt) is Ans. 30,888 kHz w²0²y a²y
Use the Doppler equation for a moving source to calculate the observed frequency for a 250.-Hz source of sound if it is moving with a speed of ____ . (Assume that the speed of sound in air is 340. m/s.) 30. m/s towards the observer. 30. m/s away from the observer. 300. m/s towards the observer. 300. m/s away from the observer. 320. m/s towards the observer. 335 m/s towards the observer.
E10. What is the frequency of a sound wave with a wavelength of 0.85 m traveling in room-temperature air (v = 340 m/s)?
The frequency of the highest note on the violin is 3,520 Hz. a. How many harmonics of that note can we hear? b. How many harmonics of the note one octave higher it can we hear?
QUESTION 5 The speed of sound in air is 340 m/s. What is the frequency of a sound wave with a wavelength of 1.5 meters? O a. 510 Hz b. 340 Hz C0.0044 Hz O d.227 Hz