A scuba tank is dropped overboard and sinks to the ocean floor 20 ft below (T = 62 F). The composite metal (SG = 4.5) tank has a mass of 31.7 lbm when empty and has an internal volume of 0.355 ft3. The tank is currently filled with air to about 3000 psig. To retrieve the tank, you plan to dive down, open the valve, and let out air until the tank begins to float upward. Then, I realized that my plan to float the tank by letting out air wouldn't work. My second thought is to swim down, attach an empty plastic bag to the air valve, and release air from the tank into it. Will this work? If so what will be the volume of air in the bag when the tank just lifts off the ocean floor (ft3) and what will be the mass of air in the bag?
A scuba tank is dropped overboard and sinks to the ocean floor 20 ft below (T = 62 F). The composite metal (SG = 4.5) tank has a mass of 31.7 lbm when empty and has an internal volume of 0.355 ft3. The tank is currently filled with air to about 3000 psig. To retrieve the tank, you plan to dive down, open the valve, and let out air until the tank begins to float upward. Then, I realized that my plan to float the tank by letting out air wouldn't work. My second thought is to swim down, attach an empty plastic bag to the air valve, and release air from the tank into it. Will this work? If so what will be the volume of air in the bag when the tank just lifts off the ocean floor (ft3) and what will be the mass of air in the bag?
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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