Apiston-cylinder device contains 5 kg of saturated water vapor at 3 mpa. now heat is rejected from the cylinder at constant pressure until the water vapor completely condenses so that the cylinder contains saturated liquid at the end of the process. draw the process on a p-v diagram and calculate the entropy change of the refrigerant during this process.

A)-in the process of engineering design, explain the contribution of material selection. b)- explain the procedure of synthesis as is employed in engineering design. c)- is there any relationship between ergonomics and engineering design? explain. d)- safety consideration in engineering design includes human, product and the enviroment . explain how safety will be incorporated into the design?