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A tubular aluminum bar (G = 28 GPa) of square cross section (see figure) with outside dimensions 50 mm x 50 mm must resist a torque T = 340 N ·m. Calculate the minimum required wall thickness t if the allowable shear stress is 31 MPa and the allowable angle of twist e per unit length is 0.033 rad/m.
a concrete pier of square cross section is 6m high. the sides taper uniformly from a width of 0.5 m at the top to 1.0 m
Molybdenum forms a substitutional solid solution with tungsten. Compute the number of molybdenum atoms per cubic centimeter for a molybdenum-tungsten alloy that contains 16.4 wt% Mo and 83.6 wt% W. The densities of pure molybdenum and tungsten are..
a rigid chamber contains 100 kg of water at 500 kpa 100 c. a paddle wheel stirs the water at 1000 rpm with a torque of
a cam rotating at a constant speed of 100 rpm drives a roller follower such taht it has a displacement given byy 10
Please complete the following tasks to obtain the equations of motion of this machine. Draw a free body diagram of the handle/dipper combination. You may assume that this is one rigid body. Assign a coordinate system of your choosing
Two reversible engines operate in series between temperatures of 1000 F and 100 F. If the first engine receives 1000 Btu, determine the total work output of this arrangement and the temperature at the inlet to the second engine. Assume that both engi..
a horizontal wire of length 0.57 m carrying a current of 6.9 a is placed in a uniform external magnetic field. when the
Consider the flow of a uniform stream of speed V in the x-direction and a sink of strength Q at the origin. Find the stagnation point(s) and the equation of the stagnation streamline. Sketch (freehand) the flow streamlines
Problem: The crate on the platform weight 4 tons. What is the reaction at joint b?
1 the steady-flow reversible work equation wrev-vp2-p1-delta pe-delta ke applies toa. any substanceb. only compressible
an air-conditioning system requires a 20-m long section of 15-cm diameter duct work to be laid underwater. determine
The dew point of air at 40?C is measured as 25?C ± 0.5?C. Calculate the relative humidity and wet-bulb temperatures and their uncertainties.
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