You are trying to overhear a juicy conversation. But when you are a distance of 25.0 m awayfrom the conversation, the intensity level (or sound level) is the same as that of an averagewhisper at 20.0 dB. So you decide to move closer to the conversation in order to increase theintensity level to a more discernable 50.0 dB. How far away will you be from theconversation? Include a basic sketch of the situation.

Answered: Image /qna-images/answer/2a009caa-aef0-4476-a82e-7266d94555d4.jpg

Answered: You are trying to overhear a juicy…

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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You are trying to overhear a most interesting conversation, but from your distance of 10.0 m , it sounds like only an average whisper of 20.0 dB . So you decide to move closer to give the conversation a sound level of 60.0 dB instead. How close should you come? Formula: I = I0⋅10(β/10) a) What intensity I1 corresponds to 20.0 dB ? b) What intensity I2 corresponds to 60.0 dB ?
2. A spherical source radiates sound uniformly in all directions. At a distance of 11 m, the sound intensity level is 94 dB. What power is radiated by this source? W cei16 cei16. 116 cci16 cei ceil6 ccil6⁹ to the the 911
Q3: A 1.0 W point source emits sound waves isotopically. Assuming that the energy of the waves is conserved, find the intensity (a) 1.0 m from the source and (b) 2.5 m from the source. (Hint: the area of the sphere is 4ar')
The softest sound a human ear can hear is at 0 dB (Io = 10-12 W/m2). Sounds above 130 dB cause pain. A particular student's eardrum has an area of A = 51 mm^2. a. What is the most power, in watts, the ear can receive before the listener feels pain? b. What is the smallest power, in watts, the ear can detect?
Two identical guitar strings are prepared such that they have the same length (0.68) and are under the same amount of tension. The first string is plucked at one location, primarily exciting the first harmonic. The other string is plucked in a different location, primarily exciting the fourth harmonic. The resulting sounds give rise to a beat frequency of 324Hz. What is the wave propagation speed on the guitar strings? wave propagation speed: m/s
A good hearing aid will uniformly increase the sound intensity of all audible frequencies of sound by 31.7 dB. If such a hearing aid picks up sound having a frequency of 300 Hz at an intensity of 3.08 x 10-11 w/m2, determine the sound intensity the hearing aid delivers to the eardrum. W/m2
A.) I have an open-closed tube with a length of 0.7 m and a radius of 0.5 cm. What is the wavelength of mode number 2, in m? B.) I have an open-open tube with a length of 0.7 m and a radius of 1.6 cm. What is the frequency of mode number 1, in Hz? The speed of sound is 343 m/
You hear a song from your playlist you haven't heard in a while and it warrants you to commence singing. As you are sing, the power of the compression wave you create is approximately 297.02 nW (note, nW is nano-Watts). What is the intensity of this sound as measured by your roommate who is standing 6.04m from you? Please give your answer in units of nW/m2. This unit is not a common one. Usually, the unit would simply be Watts per square-meter (which would be your answer divided by a million!). This goes to show you that are ears are amazingly sensitive to very tiny sound intensities. Note: Intensity was a topic covered in section 11.1, and I will provide the formula: I = P / A where P is the power in units of Watts, and A is the surface area of a sphere of radius "L" (in this problem).
Thunderstruck: A lightning bolt strikes nearby - just 20.7 m away. A recording device registers the sound intensity of the thunder at 122 dB. After 101 seconds, another nearly identical bolt strikes further away. You see the flash immediately. Then, 8 seconds later you hear the thunder. What is the intensity of the sound of thunder from the second lightning strike, in decibels (dB)? The speed of sound in air is 343 m/s.
While taking off, a jet engine emits 132.0 W of sound power as it reaches a height of 97 m. A small microphone with a 1.00 cm^2 area is on the ground directly below the jet. a) What is the sound intensity at the position of the microphone? b) What is the sound intensity level at the position of the microphone? c) How much sound energy impinges on the microphone in 4.0 s?
You hear a song from your playlist you haven't heard in a while and it warrants you to commence singing. As you are sing, the power of the compression wave you create is approximately 579.05 nW (note, nW is nano-Watts). What is the intensity of this sound as measured by your roommate who is standing 9.89m from you? Please give your answer in units of nW/m2. This unit is not a common one. Usually, the unit would simply be Watts per square-meter (which would be your answer divided by a million!). This goes to show you that are ears are amazingly sensitive to very tiny sound intensities. Note: Intensity was a topic covered in section 11.1, and I will provide the formula: ?=?/?I=P/A where ?P is the power in units of Watts, and ?A is the surface area of a sphere of radius "L" (in this problem).

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