Refrigerant-134a enters the condenser of a residential heat pump at 1200 kpa and 50c at a rate of 0.025 kg/s and leaves as a saturated liquid-vapor mixture at 39.4c and 0.0067 m^3/kg. if the compressor consumes 1.5 kw of power, determine (a) determine the quality of the mixture at the exit of the condenser, (b) cop of the heat pump and (c) the rate of heat absorption from the outside air.

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.

Slip occurs via two partial dislocations because of (a) the shorter path of the partial dislocation lines; (b) the lower energy state through partial dislocations; (c) the charge balance.