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A lamina consists of 100 fibers of 10-μm diameter. The fibers are 10 mm long. Find the interfacial area. What is the increase in the interfacial area if the diameter of the fiber is reduced to 5 μm and the total volume of fibers is kept constant?
Determine the tensions developed in wires , and and the angle required for equilibrium of the 30-lb cylinder E and the 60-lb cylinder F.
Simplify the appropriate Navier-Stokes equation for the ?ow between parallel plates assuming u ¼ u(y) and gravity in the z-direction. The streamlines are assumed to be parallel to the plates so that v ¼ w ¼ 0.
The final step of a manufacturing process in which a protective coating is applied to the inner surface of a circular tube involves passage of dry, atmosphere air through the tube to remove a residual liquid associated with the process. Consider a..
25 kg of water are placed in a rigid, initially evacuated container which has a volume of 2 m3 . After sitting for some time, the pressure stabilizes at 10.0 bars. What is the specific entropy (kJ/kg K)of the liquid vapor mixture?
The university requires proof of compulsory vaccinations (including 2 shots of the MMR vaccine) for its students but not its faculty. Provide economic justification for this different approach to student and faulty vaccination requirements.
the 500 lbf motor is supported on springs with a total stiffness of 5000 lbfin. the springs have a damping ratio of
The highest level is a main program that implements a digital clock using an LED or LCD display. Two, three, or four momentary switches will be used to control the operation of the digital clock.
Contrast the r dependence of δ with that of a condensing film on a rotating disk and explain the difference qualitatively.
A balloon behaves so the pressure is P = C2V1/3, C2 = 100 kPa/m. The balloon is blown up with air from a starting volume of 1 m3 to a volume of 3 m3. Find the final mass of air assuming it is at 25oC and the work done by the air.
Assuming that collapse occurs by Euler buckling of the strut, determine the angle θ for minimum weight of the strut.
If a bubble in sparkling water accelerates upward at the rate of 0.225 m/s2 and has a radius of 0.500 mm, what is its mass? Assume that the drag force on the bubble is negligible.
a mass of 12kg of refrigerant-134a initially exists as a saturated vapor in a piston-cylinder device at 240 kpa. then
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