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A fan with a diameter of 12 inches operates at a voltage of 120V with a current draw of 0.5 amps. The manufacturer claims the average velocity of air leaving the fan is 33.1 ft./s under standard conditions. Standard air has a density of 0.075 lb mass per feet cubed. Is the manufacturer's claim valid? What is the efficiency of this fan/motor system?
the vertical motion of mass a is defined by the relation x10sin2t15cos2t100. determine a the position velocity and
a water-coolerice-maker operates at steady-state producing chilled water at 5 c and ice at -10 c from tap water at 20c.
a carnot engine operates between temperatures of 700 and 369 k. to improve the efficiency of the engine it is decided
two bars one having a circular section of radius b the other an elliptic section with semiaxes ab.for equal angles of
according to data provided by motor trend the 2011 chevrolet silverado diesel hd is powered by an 8 cylinder diesel
The following suspension system has two support structures-a spring and a rubber pad. Vertical force F (N) acts on the moveable plate. The spring has a spring constant of k1 = 1000 N/m. The rubber pad has a spring constant of k2 = 20000 N/m. The rubb..
matt has perfected the art of bungee jumping such that from a bridge above a river he can fall and just touch the
air within a piston-cylinder assembly initially at 175psi 660of undergoes an isentropic expansion to 20 psi. what is
rotor blades of a helicopter are of radius 5.2m and rotating at a constant angular velocity of 5 revs. the helicopter
a projectile is launched at a with a spped u and 45 degree launch angle. if the peak of the trajectiry is at 8 km from
at a ski resort water at 40 f is pumped through a 3-in diameter 2000ft long steel pipe from a pond at an elevation of
Describe the principle and operation of an hearth furnace. Possible references: Making and Shaping of Steels by the American Society of Metals and Google resources.
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