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012 10.0 points A rock group is playing in a bar. Sound emerging from the door...
A rock group is playing in a bar. Sound emerging from the door spreads uniformly in...
A rock group is playing in a bar. Sound emerging from the door spreads uniformly in all directions. The intensity level of the music is 126 dB at a distance of 2.47 m from the door. At what distance is the music just barely audible to a person with a normal threshold of hearing? Disregard absorption. Answer in units of m.
the answers were wrong the first time this was answered! 012 10.0 points A rock group...
the answers were wrong the first time this was answered!
012 10.0 points A rock group is playing in a bar. iSound emerging from the door spreads uniformly in all directions. The intensity level of the music is 72.6 dB at a distance of 4.72 m from the door. At what distance is the music just barely dible to a person with a normal threshold of hearing? Disregard absorption. Answer in units of m.
Q2. A siren radiates sound uniformly in all directions. A person standing a distance L from...
Q2. A siren radiates sound uniformly in all directions. A person standing a distance L from the siren regsiters a sound intensity level of 115 dB but a person standing twice that distance registers an intensity of 109 dB. What is the ratio of the intensities at those points. What will the sound intensity level at a distance of 12 L be?
Table 15.3 Sound intensity levels and intensities of common environmental sounds ReviewI Constants Periodic Table Sound...
Table 15.3 Sound intensity levels and intensities of common environmental sounds ReviewI Constants Periodic Table Sound β(dB) 1(W/m2) Threshold of Part A hearing 1.0 10-12 Person breathing, A whisper, atm 20 1.0x 1010 Classroom during Residential street, Quiet restaurant Normal Table 15.3 in the textbook gives an estimate for the sound intensity of a whisper at 1.0 m. What is the sound intensity of a whisper at a distance of 2.5 m, in W/m Express your answer in watts per...
Using a frequency-measuring lab device, I am to map out the sound intensity level distribution (dB)...
Using a frequency-measuring lab device, I am to map out the sound intensity level distribution (dB) in a room (both with & without music playing) to create a 5x5 grid of 25 data points. Using the following data table of sound intensity level β(dB) and corresponding intensity I(W/m2), I also need to find the intensity to the nearest order of magnitude for the points on my sound intensity level maps. Here is the data table: Intensity levelβ(dB) Intensity I(W/m2) Example/effect...
1. The speed of sound in an alcohol at a temperature of 20°C is 1260 m/s....
1. The speed of sound in an alcohol at a temperature of 20°C is 1260 m/s. The density of the alcohol at that temperature is 650 kg/m^3. At a temperature of 20°C, find the bulk modulus of the alcohol. 1030 MPa 1080 MPa 1140 MPa 1190 MPa 1240 MPa 2. During a thunderstorm, you hear the sound 4 s after you see the lightning flash. How far did it fall? Assume the temperature outside is approximately 20 1.324 km 1.372...
the answers were wrong the first time this was answered!
012 10.0 points A rock group is playing in a bar. iSound emerging from the door spreads uniformly in all directions. The intensity level of the music is 72.6 dB at a distance of 4.72 m from the door. At what distance is the music just barely dible to a person with a normal threshold of hearing? Disregard absorption. Answer in units of m.
Table 15.3 Sound intensity levels and intensities of common environmental sounds ReviewI Constants Periodic Table Sound β(dB) 1(W/m2) Threshold of Part A hearing 1.0 10-12 Person breathing, A whisper, atm 20 1.0x 1010 Classroom during Residential street, Quiet restaurant Normal Table 15.3 in the textbook gives an estimate for the sound intensity of a whisper at 1.0 m. What is the sound intensity of a whisper at a distance of 2.5 m, in W/m Express your answer in watts per...
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