The test tube is immersed in water with its open end to a depth equal to half its length. The water level in the test tube matches the water level in the reservoir. The initial temperature of the entire system is T1 = 273° K. At what maximum length of the test tube will air begin to leave it if the system temperature is brought to T2 = 373° K? External pressure Po = 1 atm. Neglect the vapor pressure of water at 0°C.
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