Oxygen enters an insulated 12-cm-diameter pipe with a velocity of 90 m/s. At the pipe entrance, the oxygen is at 240 kPa and 20°C; the exit it is at 200 kPa and 18°C. Calculate the rate at which entropy is generated in the pipe. The rate at which entropy is generated in the pipe is:

Inadequate stores control is not an obstacle to effective work order system. (clo4) a)-true b)-false

An electric kettle is made out of stainless steel, weighs two pounds (when empty) and is equipped with a heating element that consumes 2 kw of electricity. assuming that the water and the kettle are at the same uniform temperature at any moment of time, calculate the shortest possible time to bring 2 quarts of water from room temperature to the onset of boiling

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?