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For a deck, supports of length 3.25 m are proposed to be built from aluminum with a Young's modulus of 72 GPa and a yield stress of 480 MPa. A cylindrical design is proposed with outer diameter d = 100 mm and wall thickness t to be specified. If the design specs require that each column support a load of 100 kN with a safety factor of 3, find the necessary column thickness t.
refrigerant 134a is throttled from a saturated liquid at 70f to a saturated liquid-vapor mixture at 36.1 psia. what are
The velocity field of a flow is given by V = (3y + 2)i + (x - 8)j + 5zk , where x, y, and z are in feet. Determine the fluid speed at the origin (x = y = z = 0) and on the y axis (x = z = 0). First, determine the fluid speed at the origin (x = y = z ..
a 4 l volume of pressure cooker in a kitchen operates at 200 kpa with an exit area of 10 mm2. with well controlled heat
a horizontal force f pushes a 10 kg block up a fricitionless ramp with a circular contour the radius of curvature of
a 55 horsepower 1800 rpm electric motor is connected to a speed reducer with a ratio of 171. neglecting friction in the
An ideal Otto cycle has a compression ratio of 13.5, takes in air at 95kPa and 20°C and is repeated 940 times per minute. Using constant specific heats at room temperature, determine the thermal efficiency of this cycle
during practice a player p punts a ball b with a speed vo25 fts at an angle theta 60 degrees and at a height h from
Laboratory measurements of water flowing across a flat plate indicate a local shear stress of 2.3 Pa. the free-stream velocity of the water is 5 m/s. If the free-stream & plate temperature are 15 C & 60 C, respectively, what is the local heat flux?
An air-conditioning system operating on the reversed Carnot cycle is required to transfer heat from a house at a rate of 727 kJ/min to maintain its temperature at 21°C. If the outdoor air temperature is 39°C, determine the power required to operate t..
How to draw the forming limit diagram
Calculate the total moment about the hinge of the seal gate - Describe the operation of a device which uses hydraulic pressure.
Lawn mower engines normally have finned surfaces directly attached to the engine block, with no radiator, in order to achieve the required cooling. Why might the cooling strategies be different in these two applications?
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