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1. Water exits a 1-cm-diameter outlet of a faucet. Estimate the maximum speed that would result in a laminar ?ow if the water temperature is (a) 20-C, (b) 50-C, and (c) 100-C. Assume Re ¼ 2000.
2. Air ?ows over and parallel to a ?at plate at 2 m=s. How long is the laminar portion of the boundary layer if the air temperature is (a) 30-C, (b) 70-C, and (c) 200-C. Assume a high-?uctuation level on a smooth rigid plate.
A refrigerator with a COP of 3 removes 1.5 kW from the cold space at -9 °C while rejecting heat to the kitchen at 22 °C.
A component in the shape of a large rectangular sheet is made from AL-7075-T651. It carries uniform axial stress that may reach up to 50% of its yield strength. Assuming worst case scenario, what is the largest edge crack that can be allowed?
if a car pasess point a with a speed of 20 ms and begins to increase its speed at a constatnt rate of atangential 0.5
the track for a racing event was designed so that riders jump off the slope at 30 degrees from a height of 5 ft. the
a solid hollow tube thin wall with pin in the bottom and the top part is connect with another tube and there is a force
a golfer hits a ball giving it a maximum height of 20 m . if the ball lands 130 m away at the level from which he hit
The exit temperature, in °R
the gas inside a cylinder is confined by a piston to a volume of 100 liters. an external force on the piston changes
the average electrical generating capacity of the united states was about 475000 mw in 2007. if trends continue this
A 10 inch long cantilevered beam has a 1” by 1” square cross section. The load at the end of the beam cycles from 0 lbs to 300 lbs. determine the stress. Determine the slenderness ratio and column constant of a 38” long steel column that has a 1.5 in..
Evaluate the maximum height reached by the sphere, and the distance traveled by the block.
the pistoncylinder contains 0.1 kg r-410a at 600 kpa 60oc. it is now cooled so the volume is reduced to half of the
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