Water flows through a horizontal 60-mm-diameter galvanized iron pipe at a rate of 0.02 m 3/s. if the pressure drop is 135 kpa per 10 m of pipe, do you think this pipe is
(a) a new pipe,
(b) an old pipe with a somewhat increased roughness due to aging, or
(c) a very old pipe that is partially clogged by deposits

If you were designing a bumper for a car, would you prefer it to exhibit elastic or plastic deformation? why? consider the functions of a bumper in both a minor "fender-bender" and a major collision.

Two technicians are discussing the intake air temperature (iat) sensor. technician a says that the computer uses the iat sensor as a backup to the engine coolant temperature (ect) sensor. technician b says that the powertrain control module (pcm) will subtract the calculated amount of fuel if the air measures hot. who is correct

Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.