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A certain location, wind is blowing steadily at 10 m/s. Determine the mechanical energy of air per unit mass and the power generation potential of a wind turbine with 60 m diameter blades at that location. Take the air density to be 1.25 kg/m³.
a 230-v shunt motor develops a torque of 40 ib-ft when the armature current is 11 a. find the torque developed when the
a homogeneous cylinder with weight g and radius r lay on a roughnbsphorizontal floor and adjoins to a rough vertical
a straight fin of rectangular profile has a thermal conductivity of 14 wm -oc thickness of 2.0 mm and length of 23 mm.
calculate the rate of heat transfer per unit surface area by radiation between two brick walls a short distance a part
the masses of a b and c are 5 kg 15 kg and 100 kg respectively. the coefficient of friction between all contacting
a ball is tossed from an upper-story window of a building. the ball is given an initial velocity of 8.20 ms at an angle
An insulated rigid tank is divided into two equal parts initially by a partition. Initially, one part contains 5 kg of air at 800 kPa and 75° C and the other part is evacuated. The partition is now removed and the air expands into the entire tank. De..
a medical technician uses a pair of four inch long tweezers to remove a wood sliver from a patient. the technician is
A size 4-0 (0.15mm diameter) monofilament nylon suture was tested for its stress relaxation properties using a micro-mechanical tester at room temperature. A 20 mm sample was stretched 2 mm over a 20 second period; the force-displacement curve for th..
a potato is baked in an oven at 200degc. the potato is then removed from the oven and put on a table in the kitchen.
a stone is dropped into a lake causing circular waves whos radii increase at a contant rate of .5 m/s at what rate is the circumference of a wave changing when its radius is 4 meters?
There is a process in which ball bearings made of plain carbon steel are rolling from an oven at a uniform temp of 870 degrees Celsius into a water bath where the water is at 37 degrees Celsius to quench them. A rubber conveyer belt then carries them..
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