A large freshwater fi sh has a swim bladder with a volume ofBIO 5.0 x 10- m3. The fish

Chapter 12, Problem 85

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A large freshwater fi sh has a swim bladder with a volume ofBIO 5.0 x 10- m3. The fish descends from a depth where the absolutepressure is 3.0 atm to deeper water where the swim bladder is compressedto 60% of its initial volume. As the fish descends, the gaspressure in the swim bladder is always equal to the water pressure,and the temperature of the gas remains at the internal temperatureof the fish's body. To adapt to its new location, the fi sh mustadd gas to reinflate its swim bladder to the 01igi nal volume. Thistakes energy to accomplish. What's the minimum amount of workrequired to expand the swim bladder back to its original volume?

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