The cylinder walls, piston and internal partition with an area of 1 dm2 are made of heat-insulating material (Fig. 8.7). The valve in the partition opens if the pressure on the right is greater than the pressure on the left. In the initial state, in the left part of the cylinder with a length of l0 = 11.2 dm there is 12 g of helium, in the right part, which has the same length, there is 2 g of helium, on both sides the gas temperature is 0 ° C. The external pressure is 105 Pa. The specific heat capacity of helium at a constant volume cv=3.15•10 J/(kg•K), and at a constant pressure cv=5.25•10s J/(kg•K). Slowly move the piston towards the partition (with a short stop at the moment the valve opens) and carefully bring the piston to the partition. What is the work done by us?
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