Numerade

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1. Treatment of tert-butyl iodide or tert-butyl chloride in 80% aqueous ethanol gives the same ratio of substitution and elimination products. In these reactions, H₂O serves as the nucleophile or base whereas ethanol (EtOH) is the solvent.

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11. What is the major advantage of the Incremental Model? a. The cost of changing requirements is reduced. b. It doesn’t’ involve constant interaction with the customer. c. It has slower delivery resulting in better agreement with the original requirements. d. The amount of analysis is increased compared to the waterfall model. e. None of these choices. 12. Which of the following is a combination of the Iterative model and the Waterfall model? a. waterfall model. b. spiral model. c. V-model. d. Agile. e. none of these choices. 13. Identify a disadvantage of the Spiral model: a. High amount of risk analysis. b. doesn’t work well for smaller projects. c. strong approval and documentation control. d. additional functionality can be added at a later date. e. none of these choices. 14. Identify the correct statement: a. One of the main challenges Software Engineering facing today is the requirement of most software systems to work with a multitude of homogenous systems. b. ‘Legacy systems’ are custom developed software systems for the legal domain. c. Software does not wear-out in the traditional sense of the term, but software does tend to deteriorate as it evolves. d. Since software is essentially ‘intangible’ it is relatively easy to manage software projects. e. With the advent of component based software assembly, we find that only less than 20% of today’s software is still custom built. 15. Identify an advantage of the V-model: a. It is very sophisticated and rigid. b. There is a great deal of analysis done before implementation takes place. c. It is amenable to early prototyping. d. Woks well on big projects. e. none of these choices.

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Calcium oxide is the major component of cement mix. Manufacturers produce this compound by the decomposition of calcium hydroxide, shown here. Calculate the energy required to produce 1 kg of calcium oxide by this process. Ca(OH)2(s) --> H2O(g) + CaO (s) delta H = +108.5 kJ

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Which of the following accounts will be CREDITED when making closing entries? • Prepaid Rent Expense • Gain on Sale of Equipment • Dividend Revenue Paid in Capital Interest Revenue Unearned Revenue • Cost of Goods Sold • Cash

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Google Chrome is an example of a browser world net cloud Done

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Suppose that the temperature at each point of a metal plate is given by the function f(x,y)=e^(x)cosy+e^(y)cosx (1) In what direction does the temperature increase most rapidly at the point (0,0) ? What is this rate of increase? (2) In what direction does the temperature decrease most rapidly at (0,0) (3) In what direction does the temperature show no changes? 2. Suppose that the temperature at each point of a metal plate is given by the function f(x,y)= e*cos y+ eY cos x (1) In what direction does the temperature increase most rapidly at the point (0, 0)? What is this rate of increase? (2) In what direction does the temperature decrease most rapidly at (0,0) (3) In what direction does the temperature show no changes?

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8. A received signal of -35 dBm exists in a channel with a total noise power of 52 dBrn. What is the signal-to-noise (S/N) ratio in decibels?

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As shown in the figure, a beam is supported by two pillars separated by a distance $ell$. The beam has a mass $M$, a length $L$, and a girl of mass $m$ is walking from the left end toward the right. (a) Find a symbolic expression for the normal force exerted on the beam by the pillar on the right, when the beam is on the verge of tipping. (Use the following as necessary: $M$, $m$, and $g$.) $N_2 = $ (b) Find a symbolic expression for the girl's position, when the beam is on the verge of tipping. (Use the following as necessary: $M$, $m$, $L$ and $ell$.) $x = $ (c) Find a symbolic expression for the minimum value of $ell$ that will allow the girl to reach the end of the beam without it tipping. (Use the following as necessary: $M$, $m$, and $L$.) $ell_{min} = $

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wastes were describe the operation in terms of time, etc.). 8-4. Determine the haul equation constants a and b for the following data (A, B, or C to be selected by your instructor.) Average haul speed (y), Round-trip distance(x), mi/trip mi/h A B C 10.0 0.9 1.0 1.1 20.0 2.9 3.1 4.6 25.0 4.0 4.8 3.0 29.0 5.5 6.5 16.0 30.0 6.0 7.0 21.0 35.0 8.0 10.5 39.0 10.0 16.0 40.0 11.0 20.0 45.0 15.5 50.0 28.0 8-5. You are the city engineer in a small rural town. During a council meeting you are asked to compare the satellite method of collection with the more traditional curb- and-alley collection service that the city is currently providing. Startled, because you had fallen asleep during the preceding 4-h debate concerning the merits of the city slogan, you try to collect your thoughts. What are some of the important considerations that must be brought out in your discussion?

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The vectors u = (1, -1) and v = (2, 1) are orthogonal with respect to the weighted Euclidean inner product < u, v> = 3u1v1 + 2u2v2

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john g.