7. a cylinder has a thick piston initially held by a pin (see fig). the cylinder contains carbon dioxide at 200 kpa and ambient temperature of 290k. the metal piston has a density of 8000 kg/m 3 and the atmospheric pressure is 101kpa. the pin is now removed, allowing the piston to move and after a while the gas returns to ambient temperature. find the new height h 2

To design a steam turbine to produce 12,000 hp power. a engineer comsiders using a steady state stean low st 1160fr and engineer considers using a steady state steam flow at 1160°r and 450 psia to drive this steam turbine. the exhaust of the steam is cooled by the lake (vacuum). heat losing to the surroundings is measured at a rate of 555.55 btu/s. (a) sketch the system with the given conditions. (b) neglecting kinetic and potential energy changes from inlet to exit, determine the volumetric flow rate of the steam at the inlet, (ft'/hr). must clearly show unit conversions at crtical terms.