Please help me with finding Sound "I havequiztomorrow.?
Assume that the speed of sound in air is 343 m/s, at 20C,unlessotherwise noted.
2. You are listening to an outdoor concert on a day whenthetemperature is 0C. The sound of a wavelength of .490 m isemittedby a flute on the stage 125 m from where you arestanding.
a) What is the time elapsed before you hear the sound emittedfromthe stage?
b) What is the frequency of the sound?
3. The engine of a jet plane taking off produces a sound levelof140 dB, and the sound wave has a pressure amplitude of 200 Pa.Abaggage handler working next to a jet plane that is taking offiswaring specially designed hearing protectors that reduce thesoundlevel entering his ear by 40 dB. What is the pressureamplitude ofthe sound wave entering his ear?
**Please show your work, so I can understand how to do this inthefuture.
Please answer 1 or both...
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watching
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11 Dec 2019
A concert loudspeaker suspended high off the ground emits 31.0 W of sound power. A small microphone with a 0.800 cm^2 area is 53.0 m from the speaker.
How much sound energy impinges on the microphone each second?
A concert loudspeaker suspended high off the ground emits 31.0 W of sound power. A small microphone with a 0.800 cm^2 area is 53.0 m from the speaker.
How much sound energy impinges on the microphone each second?
PriyankaLv10
27 Jan 2021