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A jet produces a sound level of approximately 140 dB at a distance of 10. m....
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...
An opera singer produces a decibel level of 109 dB at a distance of 0.400 m.The...
An opera singer produces a decibel level of 109 dB at a distance
of 0.400 m.The area of a typical eardrum is about 5.00 ✕
10−5 m2.mAssume the sound propagates as a
spherical wave. Determine the sound intensity I and power P
incident on a typical eardrum at distances of 3.00 m and 21.0 m
from the singer.
ADDITIONAL PROBLEMS An opera singer produces a decibel level of 109 dB at a distance of 0.400 m. The area of a...
1)The sound level at a distance of 1.82 m from a source is 146 dB. At...
1)The sound level at a distance of 1.82 m from a source is 146 dB. At what distance will the sound level be 50.7 dB? Answer in units of m. 2)At what distance will the sound level be 7.22 dB? Answer in units of m.
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
At a distance of 73 cm, a mosquito can barely be heard at a sound level...
At a distance of 73 cm, a mosquito can barely be heard at a sound level of 4.1 dB. What is the intensity of this sound? If the same mosquito were flying at a distance of 1.3 cm from your ear, what would be the intensity of its sound? If there were two mosquitoes 1.3 cm from your ear, how loud would they sound? (dB). How loud would the mosquito sound at 1.3 cm from your ear (dB)? Hint: sound...
The decibel level of the noise from a jet aircraft is 130 dB when measured 24.8...
The decibel level of the noise from a jet aircraft is 130 dB when measured 24.8 m from the aircraft. How much sound power does the jet aircraft emit? Answer in units of W. How much sound power would strike the eardrum of an airport worker 24.8 m from the aircraft? Assume the diameter of the worker’s eardrum is 1.7 × 10−2 m. Answer in units of W.
2. (2 pts) A sound level of 150 dB is measured at 2 meters from a...
2. (2 pts) A sound level of 150 dB is measured at 2 meters from a jet engine. Find the sound intensity B of the jet engine at a distance of 20 meters assuming intensity falls off as 1/2. (Hint: First find intensity at 150 dB sound level.) 150dB 150d. B = 10Log G-1z) = 1000 W/m2 B (dB) = 2 m. B = I=100x701450) - 1000 W/m2 1000 11/12 = 'rz 2009 10-12
A constant output loudspeaker produces a sound level of 97 dB at 10 feet when located...
A constant output loudspeaker produces a sound level of 97 dB at 10 feet when located at the corner of two walls. What will be the sound level at the same distance if it is placed in an open area? a. 91 b. 94 d. 103 106 e. f. None of the above c. 97 A 200 Hz source radiates sound that produces a SPL of 85 dB at a distance of 1 meter. Is this SPL in the near-field?...
A trumpet creates a sound intensity level of 52.1 dB at a distance of 3.6 m....
A trumpet creates a sound intensity level of 52.1 dB at a distance of 3.6 m. What is the sound intensity level (in dB) of 7 such trumpets at a distance of 10.9 m?
The sound level at a distance 3.00 m away from a source is 120 dB. At...
The sound level at a distance 3.00 m away from a source is 120 dB. At what distance will the sound level decrease to 100 dB?
An opera singer produces a decibel level of 109 dB at a distance
of 0.400 m.The area of a typical eardrum is about 5.00 ✕
10−5 m2.mAssume the sound propagates as a
spherical wave. Determine the sound intensity I and power P
incident on a typical eardrum at distances of 3.00 m and 21.0 m
from the singer.
ADDITIONAL PROBLEMS An opera singer produces a decibel level of 109 dB at a distance of 0.400 m. The area of a...
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
2. (2 pts) A sound level of 150 dB is measured at 2 meters from a jet engine. Find the sound intensity B of the jet engine at a distance of 20 meters assuming intensity falls off as 1/2. (Hint: First find intensity at 150 dB sound level.) 150dB 150d. B = 10Log G-1z) = 1000 W/m2 B (dB) = 2 m. B = I=100x701450) - 1000 W/m2 1000 11/12 = 'rz 2009 10-12
A constant output loudspeaker produces a sound level of 97 dB at 10 feet when located at the corner of two walls. What will be the sound level at the same distance if it is placed in an open area? a. 91 b. 94 d. 103 106 e. f. None of the above c. 97 A 200 Hz source radiates sound that produces a SPL of 85 dB at a distance of 1 meter. Is this SPL in the near-field?...
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