Question: Find the pressure of air in a vassal being evacuated as a function of evacuation time t. The vessel volume is V, the initial pressure

Find the pressure of air in a vassal being evacuated as a function of evacuation time t. The vessel volume is V, the initial pressure is/9o. The process is assumed to be isothermal, and the evacuation rata equal to C and independent of pressure.
Note. The evacuation rata is the gas volume being evacuated per unit time, with that volume being measured under the gas pressure attained by that moment.

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