1. What is the sound power level Lw of an acoustic source that produces: a) 40...
A very noisy chain saw operated by a tree surgeon emits a total acoustic power of 32.0 W uniformly in all directions. A) At what distance from the source is the sound level equal to 106 dB ? B) At what distance from the source is the sound level equal to 54.0 dB ?
A very noisy chain saw operated by a tree surgeon emits a total acoustic power of 32.0 W uniformly in all directions. At what distance from the source is the sound level equal to 60.0 dB ?
The source of a sound wave has a power of 3.88 ?W. If it is a point source, (a) what is the intensity and (b) the sound level at a 5.61 m distance?
The source of a sound wave has a power of 8.29 ?W. If it is a point source, (a) what is the intensity and (b) the sound level at a 3.99 m distance?
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...
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?...
title: ergonomics
A point source in a free field (no reflected sound waves) produces a sound pressure level of 90 dB at a distance of 1 meter, and the sound pressure level is 84 dB at 2 meters. How far from the point source would the sound pressure level be 78db? Select one: O a. 3 meters b. 4 meters c. 5 meters d. 6 meters e. 7 meters f. 8 meters g. 9 meters h. 10 meters OOO OOO...
5. A point source emits a sound with an average power output of 80.0w. a) What is the intensity of the sound 3.00m away from the source? b) How far away from the source would you have to be to experience an intensity of 1.00x108 W/m2?
Chapter 17, Problem 030 The source of a sound wave has a power of 3.71 ㎶. 1fit is a point source, (a) what is the intensity and (b) the sound level at a 1.37 m distance (a) Number (b) Number Units Units
Chapter 17, Problem 030 The source of a sound wave has a power of 3.71 ㎶. 1fit is a point source, (a) what is the intensity and (b) the sound level at a 1.37 m distance (a) Number...
2 parts thx :) 1. A point source emits sound waves isotropically. A sound meter measures a sound level of 51 dB at location C and a sound level of 48.47 at location D, a distance of 16 m from location C. The two locations C and D and the point source are all located along the same line. How far from location C is the point source? Give your answer in m, though enter only the numerical part in...