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A 4-mm-diameter horizontal, 40-m-long pipe is attached to a reservoir containing 20-C water. The surface of the water in the reservoir is 4 m above the pipe outlet. Assume a laminar ?ow and estimate the average velocity in the pipe. Also, calculate the length of the entrance region.
a hydraulic dredge is used to dredge sand from a river bottom. estimate the thrust necessary to keep the boat
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a light globe dissipates 200w as heat. it is exposed to a light breeze of air at 20c which results in a convective heat
5 kg of water at 1 atm in a cylinder was heated until it is half boiled.1 what is the atm inside the cylinder?2 the
the superheated water vapor at 50 kpa and 100degc is compressed isentropically in a closed system to 4 mpa. determine
An electric motor draws a current of 10 amps with a voltage of 110 V. The output shaft develops a torque of 9.7 N*m, a rotational speed of 1000 rpm, and operates at a steady state.
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