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Scholar
Karma Points: 200
Respect (98%):
Date Posted: 4/5/2008 7:00:04 PM  Status: Live
Need Answer!!!
Course Textbook Chapter Problem
Calculus Based Physics N/A N/A N/A
Question Details:
When you "crack" a knuckle, you suddenly widen the knuckle cavity, allowing more volume for the synovial fluid inside it and causing a gas bubble suddenly to appear in the fluid. The sudden production of the bubble, called "cavitation," produces a sound pulse - the cracking sound. Assume that the sound is transmitted uniformly in all directions and that it fully passes from the knuckle interior to your ear over a distance of 0.29 m. If the pulse has a sound level of 68 dB at your ear, find the rate at which energy is produced by the cavitation.
µW
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Answers:

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Oracle
Karma Points: 10,392
Date Posted: 4/5/2008 8:38:32 PM  Status: Live
Asker's Rating: Lifesaver   
Response:
intensity
 threshold of hearing
  
        
marcoabarrera's Comment:
thank you



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