A 3-m-diameter, 7-m-long cylindrical tank is com- pletely filled with water. The tank is pulled by a truck on a level road with the 7-m-long axis being horizontal. Deter- mine the pressure difference between the front and back ends of the tank along a horizontal line when the truck (a) acceler- ates at 3 m/s2 and
(b) decelerates at 4 m/s2.

Ahouse has the following electrical appliance usage (1) single 40w lamp used for 4 hours per day (2) single 60w fan used for 12 hours per day (3) single 200w refrigerator that runs 24 hours per day with compressor run 12 hours and off 12 hours find the solar power inverter size in watt with correction factor of 1.25.

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.

What is the major difference between thermoplastics and thermosetting plastics from the polymerization structure point of view?