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Evaluate a process from a lean-production perspective. For example, observe the following closely, and identify, eliminate (when possible), or optimize the steps that produce waste in
(a) preparing breakfast for a group of eight,
(b) washing clothes or cars,
(c) using Internet browsing software, and
(d) studying for an exam, writing a brief report, or writing a term paper
Determine the moment of this force about the bolt center O
The air in a room has a dry-bulb temperature of 80°F and a wet-bulb temperature of 65°F.
A polymer that contains internal flaws 1.5 mm in length fails at a stress of 30 MPa. Determine the plane strain fracture toughness of the polymer. Assume a polymer specimen of "infinite" width.
The weight of the box is 20 lb and the coefficient of static friction between the box and the floor = 0.65. Neglect the weights of the bars. What is the largest value of the force F that will not cause the box to slip
If arm OA rotates with a constant clockwise angular velocity of theta dot(first dirivatie)=1.5 rad/s. determine the force arm OA exerts on the smooth 4-lb cylinder B when theta=45 degrees.
Determine the maximum displacement of the plate A if the billet strikes the plate with a speed of 8 . Neglect the mass of the springs, rollers and the plates A and B. Take = 4000 , = 40000 .
A closed system of 0.123kg undergoes a frictionless, quasi-static process along the path PV=C from 100kpa to a final state where the volume is twice the initial volume. During the process 8140 N-m of work is done by the system. What is the final spec..
A bridge has cylindrical piers 1 m in diameter and spaced 15 m apart. Downstream of the bridge where the flow disturbance from the piers is no longer present, the flow depth is 2.9 m and the mean velocity is 2.5 m/s.
An adiabatic and reversible air compressor takes air in at 15 psia, 560 R. The air exits at 90 psia at the rate of 0.8 lbm/s. Determine the minimum compressor work input and repeat for an inlet at 530 R instead. Why is the work less for a lower in..
Thermal expansion among polymers is lowest in thermosets. Why?
What would the aperture have to be if there were two fractures of equal aperture. For your calculations you can assume that the rock matrix that contains the fracture(s) has zero hydraulic conductivity.
The air pollution emission rate E in a parking lot may be approximately by the step function shown in figure E10.5. Assuming a constant airflow F and zero initial pollutant concentration, plot the C as a function of time.
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