An ideal gas expands in a piston-cylinder. on a pressure-internal energy diagram, sketch the area that represents all possible irreversible, adiabatic expansions from 5 bar and 200°c to a final pressure of 1 bar. explain your sketch.

The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false

Burgers vector is generally parallel to the dislocation line. a)-true b)-false

Asimple speed reducer is composed of 2 spur gears. the pinion gear has a pitch diameter of 0.75" and 36 teeth while the driven gear has a pitch diameter of 4.0" and 192 teeth. a)-what is the diametral pitch of each gear? b)-if an electric motor rotating ccw at 3000 rpm is coupled to the pinion, what is the rotational speed of the driven gear? c)-if the torque delivered to the pinion is 1 n-m, what is the torque on the driven gear? d)-what is the power transmitted by the gear train?