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One restaurant makes sandwiches as they are ordered by customers. Another competing restaurant makes sandwiches in advance and sells them to customers from their inventory. Which is a pull, and which is a push system? Explain which restaurant makes the better sandwiches.
Calculate the tensile modulus of elasticity for a 10 laminated composite consisting of 62 percent by volume of unidirectional carbon fibers and an epoxy matrix under isostress conditions.
Two new rides are being compared by a local amusement park in terms of their annual operating costs. The two rides are assumed to be able to generate the same level of revenue (and thus the focus on costs).
What is the porosity of a sphere of 1 ft diameter packed inside a cube of 1 ft on each edge. What if the spheres are six inches in diameter. What if the spheres are one inch in diameter.
A 3.00 in-diameter steel bar has a flat milled on one side, as shown in Figure P3-29. If the shaft is 44.0 in long and carries a torque of 10 600 lb•in, compute the stress and the angle of twist.
The components of plane stress at a critical point on a thin steel shell are shown. Determine if failure (yielding) has occurred on the basis of the maximum distortion-energy theory. The yield stress for the steel is σY = 650 MPa.
If this two-step process is replaced by a single isothermal expansion of the air from 800 K and 4 bar to some final pressure P, what is the value of P that make the work of the two processes the same
Laboratory clean rooms are often kept at a slightly higher pressure than ambient pressure in order to flush out particulates and keep dust from getting in. If the pressure in such a room is equivalent to 1 mm water greater than the surrounding roo..
A 45 W electric mixer is operated for 5 minutes while mixing a 2 kg shake. Assume Csubv=4200 J/kg-K for the liquid. Determine the temperature rise (in degrees C) of the milk shake.
Welding of rebar on site is generally an uncommon occurrence. When a small amount of field rebar welding is required, what can the general contractor do to expedite this work?
A city is subjected to occurrence of hurricane and tornado with the average probabilities of 0.3 and 0.2 per year, respectively. Assume occurrence of these events is statistically independent.
The L-shaped frame is made from two segments, each of length L and flexural stiffness EI. If it is subjected to the uniform distributed load, determine the vertical displacement of point B.
Water seeps vertically downward from the bottom of a lake through a uniform material to an aquifer below. The discharge is 0.005 ft^3/s through a 1 ft^2 area of the lake bottom.
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