5. By how many decibels do you reduce the sound intensity level due to a source...
5. By how many decibels do you reduce the sound
intensity level due to a source of sound if you double your
distance from it? Assume that the waves expand spherically.
dB
6. The sound in a classroom is 63000 times as
intense as the minimum threshold of hearing. What is the intensity
level of this sound in decibels?
dB
Homework Answers
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5. By how many decibels do you reduce the sound
intensity level due to a source...
Help please!!!! By how many decibels do you reduce the sound intensity level due to a...
Help please!!!! By how many decibels do you reduce the sound intensity level due to a source of sound if you double your distance from it? Assume that the waves expand spherically.
Sound Level Workset Name Sdverstone PH105 Spring 2018 Show all math stops and write wnis wi...
Sound Level Workset Name Sdverstone PH105 Spring 2018 Show all math stops and write wnis wi The sound level in decibels is given by Sound Level Exercise ?-10 where / is the intensity in W/mi and A 10 w I. If a sound level is 0 dB, does this mean tut there is no sound? Explain. 2. Does negative dB have meaning? Explain 3. The intensity of a sound from a motorcycle is twice that of a certain car in...
Sound from source 3 has a sound intensity level that is 8.3 dB less than sound...
Sound from source 3 has a sound intensity level that is 8.3 dB less than sound from source 1. By what factor is the sound intensity from source 3 less intense than the sound intensity from source 1? (Assume the sound intensities for sources 1 and 3 are I1 and I3, respectively.)
5. A sound source has an intensity I1 and when its sound level is measured at...
5. A sound source has an intensity I1 and when its sound level is measured at a fixed distance the found value is 70 dB. The source increases its intensity to I2 and when its sound level is measured at the same distance the found value is 96 dB. What is the I2 / I1 ratio?
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...
An outside loudspeaker (considered a small source) emits sound waves with a power output of 111...
An outside loudspeaker (considered a small source) emits sound waves with a power output of 111 w (a) Find the intensity 10.7 m from the source W/m2 (b) Find the intensity level in decibels at that distance. dB (c) At what distance would you experience the sound at the threshold of pain, 120 dB? Need Help? Read 11. -/2 points SerCP10 14 P023 My No A commuter train passes a passenger platform at a constant speed of 42.1 m/s. The...
21-3 Sound Intensity Mar 30 at 11:59 Level Due this Frida pm (EDT) At a distance...
21-3 Sound Intensity Mar 30 at 11:59 Level Due this Frida pm (EDT) At a distance of 4.75 m from a localized sound source, you measure the intensity level as 73.0 dB. How far away from the source must you be for the intensity level to fall to 50.5 dB? Submit AnswerTries 0/15 Post Discussion Send Feedback
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...
An outside loudspeaker (considered a small source) emits sound waves with a power output of 111...
An outside loudspeaker (considered a small source) emits sound waves with a power output of 111 W (a) Find the intensity 10.7 m from the source. 0.76 Your response differs from the correct answer by more than 100%, w/m? (b) Find the intensity level in decibels at that distance. 118.8 Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation Cary out all inter to...
You stand 5 meters away from two machines. One machine operates at a sound intensity level...
You stand 5 meters away from two machines. One machine operates at a sound intensity level that is 50 dB at your location. The other machine operates at a sound intensity level of 70 dB at your location. What sound intensity level do you hear (measure in dB) when both machines are turned on?
Sound Level Workset Name Sdverstone PH105 Spring 2018 Show all math stops and write wnis wi The sound level in decibels is given by Sound Level Exercise ?-10 where / is the intensity in W/mi and A 10 w I. If a sound level is 0 dB, does this mean tut there is no sound? Explain. 2. Does negative dB have meaning? Explain 3. The intensity of a sound from a motorcycle is twice that of a certain car in...
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...
An outside loudspeaker (considered a small source) emits sound waves with a power output of 111 w (a) Find the intensity 10.7 m from the source W/m2 (b) Find the intensity level in decibels at that distance. dB (c) At what distance would you experience the sound at the threshold of pain, 120 dB? Need Help? Read 11. -/2 points SerCP10 14 P023 My No A commuter train passes a passenger platform at a constant speed of 42.1 m/s. The...
21-3 Sound Intensity Mar 30 at 11:59 Level Due this Frida pm (EDT) At a distance of 4.75 m from a localized sound source, you measure the intensity level as 73.0 dB. How far away from the source must you be for the intensity level to fall to 50.5 dB? Submit AnswerTries 0/15 Post Discussion Send Feedback
An outside loudspeaker (considered a small source) emits sound waves with a power output of 111 W (a) Find the intensity 10.7 m from the source. 0.76 Your response differs from the correct answer by more than 100%, w/m? (b) Find the intensity level in decibels at that distance. 118.8 Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation Cary out all inter to...
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