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A gearbox operating at steady state receives 20 horsepower along its input shaft, delivers power along its output shaft, and is cooled on its outer surface according to hA(Tb 2 T0), where Tb 5 110°F is the temperature of the outer surface and T0 5 40°F is the temperature of the surroundings far from the gearbox. The product of the heat transfer coefficient h and outer surface area A is 35 Btu/h ? °R. For the gearbox,
a pilot flying a new airplane reports that she is flying at 49000 ft as read on her altimeter that is referenced to
a laboratory glass bottle used in laboratory studies of hypoxia contains gas of the following composition expressed as
2kg of an ideal gas for which Cp=0.895 KJ/kg-k and Cv =0.706 KJ/kg-k is contained in a rigid, insulated container at 2 bar, 400K. A stirrer driven by an external motor is operated within the vessel until the pressure becomes 4bar. Determine, the fina..
this system has a hydraulic cylinder with a suspended load of 0 which is removed. the cylinder piston and rod
An Industrial water shutoff valve is designed to operate with 40lbs of force and will encounter 150lbs of resistance force applied to a 2in diameter axle. What is the required actual mechanical advantage of the system?
a solid circular shaft and a tubular shaft both with the same outer radius of cco 0.600in are being considered for a
a sketch three-dimensional views of the unit cell of a b.c.c. crystal showing a 100 plane a 110 plane a 111 plane and a
the aluminum plate of thickness t 3.5 mm. is to be designed so the maximum stress remains below 100 mpa. the hole must
calculate stoichiometric af ratiop of benzene c6h6. in an actual combustion of benzene the airfule ratio was 121.
the angle between the direction of motion of a conductor and the lines of flux is 30deg. the length of the conductor in
the surface temperature of a 100 w incandescent lightbulb is 60.0degc. the surface temperature of a 20.0 w fluorescent
A 20-mm diameter rod made of a ductile material with a yield strength of 350 MPa is subjected to torque of 100 N.m and a bending moment of 150 N.m. An axial force is then gradually applied. Determine the value of force when the rod begins to yield..
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