Air is compressed in a piston–cylinder assembly from p1 = 15 lbf/in2, T1 = 500°R, V1 = 9 ft3 to a final volume of V2 = 1 ft3 in a process described by Assume ideal gas behavior and neglect kinetic and potential energy effects. Using constant specific heats evaluated at T1, determine the work and the heat transfer, in Btu.

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?