Two people hear a tornado siren, but one listener is 60.3 times farther away from the source of the sound than the other. What is the intensity level of the sound (in decibels) for the more distant listener relative to that for the nearer listener? relative intensity: dB
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A: Write the expression for sound intensity level.
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Q: What is the decibel rating of a sound that has an intensity of 3.4 x 108 Wicm2? O 85 dB O 68 dB O 91…
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A: intensity level = B = 69.7 dB
Q: he sound level measured in a room by a person watching a movie on a home theater system varies from…
A: Decible scale is like logarithmic scale L = 10dB log10(I /I0 ) I = INTENSITY
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Q: A rock group is playing in a bar. Sound emerging from the door spreads uniformly in all directions.…
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A: increase in intensity of sound = 2.97 times I' = 2.97 I
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A: Given : Intensity at certain level (I) = 4.0×10-6 W/m2. threshold intensity (I0) = 1 x 10-12…
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A: Intensity is defined as the power passing per unit areaFor sound waves, intensity is the amount of…
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A: decibel level of sound of siren at a distance of 2 m = 128 dB
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A: Givenβ=3 dB
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Q: q31 A sound wave radiates from a speaker in all directions. If the power of the sound source is 400…
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Q: Suppose that a public address system emits sound uniformly in all directions and that there are no…
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A: doppler effect will be used here
Q: At 1.05 m form a sound source the intensity is measured to be 7.10 x 10^-3 W/m?. Find the decibel…
A: The intensity of sound is defined as the power of sound per unit area. Intensity = PowerArea 7.1 x…
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- You and your roommate decide to throw a party. You rig up three speakers with a combined decibel level of 83.5 db. You know that speaker one is 78.0 dB and speaker 2 is 76.0 dB. The sticker on the back of speaker 3 is missing, so you will have to calculate how many decibels it is. How many decibels is the third speaker?A student hears a sound with a power of P = 42 μW. At their distance from the source, the sound has intensity I = 0.71 W/m2. A. Assuming the eardrum is circular, what is the radius of their eardrum, in meters? B. Another student stands in the exact same location, but receives 20% more power from the same source. What is the radius of the second student's eardrums?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
- A concert loudspeaker suspended high off the ground emits 45 W of sound power. What is the sound intensity that reaches the an audience member 80 m away from the speaker? units: How many decibels does the audience member hear? units:Calculate the fraction of reflected ultrasound energy when ultrasound waves cross from soft tissue into fat if the acoustic impedance for soft tissue is 1.60 x 106 kg m-2 s-1 and for fat has the value 1.40 x 106 kg m-2 s-1Suppose the purr of a cat has a sound intensity that is 260 times greater than the threshold level. Find the decibel level value for the cat's purr. Round to the nearest decibel.
- If a sound with a singular frequency of 580 has an measured intensity of 9.79 x 10-5 w when at a distance of 5.88 m from the source, what is the decibel level when at a distance of 11.9 m from the source?You are at BNA (Nashville Airport) watching commercial airliners take off. At a distance of 1,020.6 away from the plane, you record a sound intensity level of 73.4 decibels. If you move such that the new sound intensity level is 88.07 decibels, how far are you away from the plane (in meters)?You are at BNA (Nashville Airport) watching commercial airliners take off. At a distance of 1,364.2 away from the plane, you record a sound intensity level of 69.31 decibels. If you move such that the new sound intensity level is 91.34 decibels, how far are you away from the plane (in meters)?
- Urgent please! A firecracker produces a power of 2.5x10-3 mw.a. What is the intensity of a firecracker at a distance of 3.00 m from thefirecracker?b. How many firecrackers would be required to produce a sound level of 120db at a distance of 5.00 m from the firecrackers?You detect a sound intensity of 0.0000136 W/m2 coming from a speaker with a power of 0.217 W. How far away from the speaker are you standing?A speaker is talking at a distance of 3.0 m from where you are and you measure the sound intensity as 1.1x10-7 W/m². a) Another student is 4.0 m away from the speaker. What sound intensity does the other student measure? b) What is the sound intensity level in decibel for an intensity of 1.1×10-7 W/m²? (Lowest detectable intensity for human Io=10-¹2W/m²)