. A cylinder with a volumetric displacement of 1477 cm3 is used in a piston aero engine burning iso-octane (C8H18). The density of iso-octane is 720 kg/m3 and air density is 1.225 kg/m3 . Determine (1) the mass of fuel and (2) the mass of air that must fill a cylinder during the injection stroke to achieve combustion with an equivalence ratio of 1.12.

If you were designing a bumper for a car, would you prefer it to exhibit elastic or plastic deformation? why? consider the functions of a bumper in both a minor "fender-bender" and a major collision.

Two flowing streams of argon gas are adiabatically mixed to form a single flow/stream. one stream is 1.5 kg/s at 400 kpa and 200 c while the second stream is 2kg/s at 500 kpa and 100 ? . it is stated that the exit state of the mixed single flow of argon gas is 150 c and 300 kpa. assuming there is no work output or input during the mixing process, does this process violate either the first or the second law or both? explain and state all your assumptions.

Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false