a) I = 86.9/(4*pi*270^2)=9.49E-5
b) P = I Amicrophone = 9.49E-5*0.231E-4=2.19E-9
A point source emits 86.9 W of sound isotropically. A small microphone intercepts the sound in...
An electronic point source emits sound isotropically at a frequency of 2 × 103 Hz and a power of 27 watts. A small microphone has an area of 0.77 cm2 and is located 175 meters from the point source. a: How many minutes will it take for the microphone to recieve 0.2 Joules from this sound? b: What is the sound intensity level at the microphone from this point source? c: What would be the sound intensity level at the...
Chapter 17, Problem 035 A po int source emits 79.3 w o sound isotropically. A small microphone intercepts the sound n an area o 0.122 ст 570 m rom ie source. Ca u ate a esu intensity there an e power tercepte the microphone. (a) Number (b) Number Units Units
A concert loudspeaker suspended high off the ground emits 39 W of sound power. A small microphone with a 1.0 cm2 area is 44 m from the speaker. What is the sound intensity at the position of the microphone? What is the sound intensity level at the position of the microphone?
A concert loudspeaker suspended high off the ground emits 25.0 W of sound power. A small microphone with a 0.900 cm2 area is 54.0 m from the speaker. How much sound energy impinges on the microphone each second?
A loudspeaker emits 31.6 W of acoustic power. A microphone with an effective cross-sectional area of 75.2 mm2 is located at a distance 194 m from the speaker. Calculate (a) the sound intensity at the location of the microphone, (b) the power incident on the microphone and (c) the total amount of energy that impinges on the microphone in 25.0 min.
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...
A concert loudspeaker suspended high off the ground emits 26.0 W of sound power. A small microphone with a 1.00 cm2 area is 50.0 m from the speaker. Correct Part B How much sound energy impinges on the microphone each second? Express your answer with the appropriate units. MÅ ? 150 dB Submit Previous Answers Request Answer X Incorrect; Try Again; 6 attempts remaining
A microphone is 9.3 m from a point source of sound. The microphone detects an intensity of 121.8 pW/m2. (Recall the pico prefix means LaTeX: 10^{-12} 10 − 12 .) Assuming the generator is perfectly efficient, what power in pW is required to produce the detected sound? Report your answer to the nearest pW.
A concert loudspeaker suspended high off the ground emits 35.0W of sound power. A small microphone with a 0.800cm2 area is 53.0m from the speaker. How much sound energy impinges on the microphone each second? Please,show me.
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?