If you hit an unoccupied vehicle and cannot find the owner, you should Choose an A. Leave the scene and repair your own vehicle. Wait for the other owner�'s insurance company to contact you. B. Leave the scene and wait for the police to contact you. C. Leave a note with your name, address, and registration number in an easily seen place on the vehicle, and report the crash to the proper law enforcement agency.

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.