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You are designing an underwater maintenance schedule for anoffshore oil rig. The divers work at a depth of 15 m and theseawater density is 1027 kg m^-3 . They are known to consume 130litres of air at the ambient temperature is 10 o C over the timetaken to do the job. Atmospheric pressure is 101325 Pa. Each full SCUBA diving tank contains 3 kg of air. What fraction of the tankair mass will be consumed on each job?

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