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The town of Chapel Hill, North Carolina, has about 100,000 people (including the students). The Smith Center has a volume of about 180,000 cubic yards. If the town of Chapel Hill used the Smith Center as a refuse disposal site, how long would it take to fill up? Make all necessary assumptions.
a water pump increases water pressure from 10 psia to 50 psi. determine the power input required in hp to pump 1.2 ft3s
One-half kilogram of water executes a Carnot power cycle. During the isothermal expansion, the water is heated until it is a saturated vapor from an initial state where the pressure is 1.5 MPa and the quality is 25%. The vapor then expands adiabatica..
A tensile sample of width 10mm contains an internal crack of length 0.3mm. When loaded in tension the crack suddenly propagates when the stress reaches 450 MPa. What is the fracture toughness K1c of the material of the sample? If the material has a m..
The distribution of X is approximated with a triangular probability density function f(x) = 0.025x-0.0375 for 30
refrigerant 134a enters an adiabatic compressor as saturated vapor at 120 kpa at a rate of 0.3 m3min and exits at 1 mpa
A composite cube with 40-mm sides and the properties shown is made with glass polymer fibers aligned in the x direction. The cube is constrained against deformations in the y and z directions and is subjected to a tensile load of 65 kN in the x di..
Assuming the plant operates on the ideal vapor-compression cycle using refrigerant 134-a between the pressure limits of 120 and 700 kPa, determine
If there is a preexisting surface crack of a = 4 mm, at what stress will the structural member fail? Will it fail by yielding or fracture?
a piston-cylinder assembly is fitted with stops. the assembly contains 0.1 kg of water initially at 1 mpa and 500degc.
Consider a C-D nozzle with a throat and exit diameter of 252 mm and 657 mm, respectively. The reservoir pressure and temperature is 10 atm and 1000 K, respectively. Calculate the back pressure (Pb) for each of these scenarios:
A steady, full-developed Couette flow in the x-direction (fully-developed means that the velocity does not evolve as a function of distance of x). Determine the pressure gradient field
sheet steel emerging from the hot roll section of a steel mill has a temperature of 120 k a thickness of delta 3mm and
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