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A horizontal water supply pipe has a length of 2000 m and a diameter of 150 mm. The pipe is connected to an open tank at one end where the elevation of water is 4 m, and at the other end there is a quick-opening valve. Determine the time it will take for the ?ow to reach 99% of the ?nal steady-state velocity if the valve is initially closed and then suddenly opened at t ¼ 0. Assume incompressible water and inelastic piping. Let f ¼ 0.030 and K ¼ 0.2 once the valve is opened.
Describe how the hereditary information contained in genes within the cell’s DNA is expressed as proteins that direct the cell’s activities. 3.19 Trace the path of a single red blood cell from a capillary bed in your right hand to the capillary beds..
A steel plane of finite dimension and thickness of 13 mm has the initial (uniform) temperature of 35 C. put the plane into the solution in all sudden and the wall temperature is increased to 146 C spontaneously. The thermo diffusivity of the plane, i..
The 20 kg block is falling and when it is 7.5 m from the gravel surface it has a velocity of 2.5 m/s. Determine the velocity of the block the instant it hits the gravel surface using
saturated water vapor at 400? is heated at constant pressure until its volume has doubled. determine the final
two refrigerators are arranged in series. one of them receives 300 kjcycle from a reservoir at 300 k. the heat
the snowmobile is traveling at 10m/s when it leaves the embankment at A.determine the speed at which it strikes the ground at B and its maximum acceleration along the trajectory AB.
according to test data a new type of engine takes in streams of water at 400 degrees f 40 psia and 200 degrees f 40
determine the specific volume of superheated water vapor at 15mpa and 350oc using a the ideal gas equation b the
estimate the machining time that will be required to finish a vertical flat surface of length 100 mm and depth 20 mm by
a 380-liter tank contains steam initially at 300 kpa and 400degc. a valve is opened and steam flows out of the tank at
a closed rigid pressure vessel is filled with a saturated mixture of 1.78 kg of liquid water and 0.22 kg of water vapor
under a stress of 1105 mpa a sample of ag has a modulus of elasticity of 580 gpa. assuming the center-to-center
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