With the help of sketches, explain why a running-bond wall has higher horizontal bending strength than a stack-bond wall, whereas the vertical bending strength of both walls is equal.
What will be an ideal response?
See the Instructor's Manual (IM).
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George is always in motion. Why does he seem to get the hardest jobs? Which
time-management difficulty is most closely related to this behavior?
a. Confusing visibility with productivity, confusing busy with being productive. b. Underestimating self, distrusting one’s own judgment. c. Assuming that the more information, the better. d. Not trusting subordinates with decisions. e. Getting sidetracked from making decision.
Upon completion all brickwork shall be thoroughly cleaned with ____ and stiff fiber brushes and then rinsed with clean water.
A. acids B. clean water C. detergent D. alcohol
There are two potential locations to construct an urgent care walk-in clinic to serve rural residents. The DN alternative is an option since the clinic is not a requirement; it would be a convenience for future patients. When incremental B/C analysis was applied at a discount rate of 8% per year, using the estimates summarized below, the results were: Rank by increasing total cost: DN, 1, 2 Location 1 vs. DN: B/C = 1.66 Conclusion: eliminate DN Location 2 vs.1: ?B/C = 0.50 Conclusion: select location 1 Location 1 2 Initial cost, $ 1,200,000 2,000,000 Annual M&O cost, $/year 80,000 75,000 Annual benefits, $/year 520,000 580,000 Annual disbenefits, $/year 90,000 140,000 Site suitability, years 10 20 Dr. Thompson, the designated lead physician of the clinic, wanted location 2 to be
selected. He has now challenged the estimates, especially the initial cost and disbenefits estimated for location 2. Besides, he calculated the B/C ratio for location 2 itself and obtained a value of 1.58, which he contends is very close to B/C = 1.66 reported for location 1, thus making the selection of location 1 a marginal decision. Answer the following questions using a spreadsheet, for the group of people who must decide if and where to construct the clinic: (a) Are the B/C ratios for the two locations correct as reported? (b) Can we select location 2 and still be economically justified? (c) How much less does location 2 have to cost initially to make it the better location? (d) If the initial cost of location 2 can’t be changed, is it possible to increase the benefits to select location 2? (e) Is the result the same if the disbenefits are completely neglected? What will be an ideal response?
The voltage across a 10-mH inductor is 45? (t – 2) mV. Find the inductor current, assuming that the inductor is initially uncharged.
What will be an ideal response?