Calculation of gas consumption and instantaneous maximum value
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Help: It is known that a tank has a volume of 3 m3, and gas is used to pressurize and depressurize it. The gas pressure is 7 kg, and its density is 1.4 kg/m3. Each pressurization cycle takes the pressure from 0 kg to 3 kg, while each depressurization cycle takes the pressure from 3 kg to 0 kg. How can the amount of gas consumed and the maximum instantaneous amount be calculated? ? Thank you
Is this helium? Filling a tank with a volume of 3 cubic meters requires 9 cubic meters of gas per filling, which costs 2,000 yuan. The instantaneous maximum value depends on the pipe diameter