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In a plant where hemispherical cup-shaped parts are made, an automatic washer is being designed to clean the parts prior to shipment. One scheme being evaluated uses a stream of water at 180°F shooting vertically upward into the cup. The stream has a velocity of 30 ft/s and a diameter of 1.00 in. As shown in Fig. 16.15, the water leaves the cup vertically downward in the form of an annular ring having an outside diameter of 4.00 in and an inside diameter of 3.80 in. Compute the external force required to hold the cup down.
a counterflowing heat exchanger cools air at 600 k 400 kpa to 320 k using a supply of water at 20degc 200 kpa. the
Calculate the static pressure (in psi) of a moving mass of air, if the ambient air pressure is 1 atms (14.69 psi) and the velocity of the moving mass of air is 100 feet/sec.
What do you understand by ‘scalability'? Discuss the differences between ‘scaling up' and ‘scaling out' and explain when these different approaches to scalability may be used.
The top is irradiated with 750 W/m2 and it radiates to the sky at 250 K. The earth below the plates is black at 10?C. Find the equilibrium temperature of each plate.
three kg of air contained in a sealed deformable device at 150 deg c and 500 kpa is expanded to 150 kpa in an
What is the physical interpretation of the Lagrange multiplier λ?
a piston-cylinder device contains 6 kg of h2 and 21 kg of n2 at 160 k and 5 mpa. heat is now transferred to the device
the maximum allowable temperature of a working fluid is usually determined by metallurgical considerations. in a
Many appliances, including ovens, stoves, clothes dryers, and hot-water heaters, offer a choice between electric and gas operation. Select an appliance that offers this choice
two humid airstreams are adiabatically mixed at 1atm pressure to form a third stream. the first stream has a
the intake for a hydroelectric facility sits 80m below the surface of the reservoir that provides water to the
Let A, B, C and D denote four reference frames, composed of mutuality orthogonal unit vectors ai, bi, ci and di (i=1,2,3), respectively. Assume that rotation matrices aRc, aRd and bRd are given. Let x, y, z and t denote some specified constants. Give..
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