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Flying Circus of Physics 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 the outside, at a distance of 0.31 m from your ear. If the pulse has a sound level of 62 dB at your ear, what is the rate at which energy is produced by the cavitation? Number Units

Flying Circus of Physics 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 the outside, at a distance of 0.31 m from your ear. If the pulse has a sound level of 62 dB at your ear, what is the rate at which energy is produced by the cavitation? Number Units

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Flying Circus of Physics 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 the outside, at a distance of 0.31 m from your ear. If the pulse has a sound level of 62 dB at your ear, what is the rate at which energy is produced by the cavitation? Number Units
Transcribed Image Text:Flying Circus of Physics 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 the outside, at a distance of 0.31 m from your ear. If the pulse has a sound level of 62 dB at your ear, what is the rate at which energy is produced by the cavitation? Number Units
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