Engineering students are often asked to design a "concrete boat" as part of a design project to illustrate the buoyancy effects of water. as a proof of concept, determine the depth d at which the concrete box will rest in the fresh water. the box has a uniform wall thickness of 3 in. on all sides and the bottom.

10 kg of co2 is initially contained at 400 kpa and 300 k. the gas constant for carbon dioxide is 189 j/lkg k) and has a specific heat ratio, k, of 1.289. isentropic expansion then occurs until the pressure is 200 kpa. a) determine the initial volume of co2 in m. b) determine the final temperature in k. c) determine the work done by the system during the expansion kl.