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...
1
answer
0
watching
211
views
11 Dec 2019
Based on the information presented in the introduction of this problem, what is a sound wave?
I) Propagation of sound particles that are different from the particles that comprise the medium
II) Propagation of energy that does not require a medium
III) Propagation of pressure fluctuations in a medium
IV) Propagation of energy that passes through empty spaces between the particles that comprise the medium
Based on the information presented in the introduction of this problem, what is a sound wave?
I) Propagation of sound particles that are different from the particles that comprise the medium
II) Propagation of energy that does not require a medium
III) Propagation of pressure fluctuations in a medium
IV) Propagation of energy that passes through empty spaces between the particles that comprise the medium
Tauseef ShaikhLv10
15 Mar 2021