A 25 MW jet engine produces a sound level of 120 dB, the threshold of pain,...
A 25 MW jet engine produces a sound level of 120 dB, the threshold of pain, at 100 m from the engine. (Recall that the threshold of human hearing is 1 x 10-12 W/m2.)
(a) What portion of the jet engine power is lost in producing this sound?
(b) You are at your quiet summer house (ambient sound level is 40 dB) and you can just hear the sound of the same jet engine at the airport. How far away is your summer house from the airport?
(c) Is the result of your simple calculation reasonable?
(d) What is missing in your assumptions?
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A 25 MW jet engine produces a sound level of 120 dB, the
threshold of pain,...
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the sound level is 103 dB when one jet engine is roaring 3 more identical jet engines start roaring what is the sound level increased to
n Review Id During takeoff, the sound intensity level of a jet engine is 150 dB...
n Review Id During takeoff, the sound intensity level of a jet engine is 150 dB at a distance of 22 m. Part A What is the sound intensity level at a distance of 1.0 km? Express your answer to two significant figures and include the appropriate units. НА ? B = 253.7 dB Submit Previous Answers Request Answer X Incorrect; Try Again; 9 attempts remaining
A jet produces a sound level of approximately 140 dB at a distance of 10. m....
A jet produces a sound level of approximately 140 dB at a distance of 10. m. Assuming that your ear has an effective radius of about 2.8 cm, what is the total power received by your ear? P Number Units
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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...
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...
n Review Id During takeoff, the sound intensity level of a jet engine is 150 dB at a distance of 22 m. Part A What is the sound intensity level at a distance of 1.0 km? Express your answer to two significant figures and include the appropriate units. НА ? B = 253.7 dB Submit Previous Answers Request Answer X Incorrect; Try Again; 9 attempts remaining
A jet produces a sound level of approximately 140 dB at a distance of 10. m. Assuming that your ear has an effective radius of about 2.8 cm, what is the total power received by your ear? P Number Units
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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