An insulated piston-cylinder device contains 5 l of saturated liquid water at a constant pressure of 150 kpa. an electric resistance heater inside the cylinder is now turned on, and 1500 kj of energy is transferred to the steam. determine the entropy change of the water during this process. use steam tables. the entropy change of water during this process

Inspection for bearing condition will include: (clo4) a)-color b)-smell c)-size d)-none of the above

Describe one experiment in which the glass transition temperature and melting temperature of a totally amorphous thermoplastic material can be determined. show the relevant experimental results in a diagram which should be properly annotated with the two temperatures clearly marked. what is likely to happen to the curve in the diagram if the amorphous polymer is replaced by a thermosetting type?

Along 8-cm diameter steam pipe whose external surface temperature is 900c connects two buildings. the pipe is exposed to ambient air at 70c with a wind speed of 50 km/hr blowing across the pipe. determine the heat loss from the pipe per unit length. (b) air at 500c enters a section of a rectangular duct (15 cm x 20 cm) at an average velocity of 7 m/s. if the walls of the duct are maintained at 100c. a) the length of the tube for an exit temperature of the air to be 40 0c. b)the rate of heat transfer from the air. c) the fan power needed to overcome the pressure drop in this section of the duct.