Urban Non pont source- From urban BMPs- which structural BMP would you.docx

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Urban Non pont source: From urban BMPs, which structural BMP would you use to control nitrogen in urban runoff. Write a paragraph (at least half a page) explaining why you would use that particular BMP. Solution I preferably use structural control BPM because Structural controls include water quality basins , infiltration basins, catch basins to regulate or impound runoff . These structures detain or filter water through plant material prior to discharge and can reduce run off quantity Water quality basins are used to store flush water and sent to treat ment plants for purification , Ponds are constructed to make sediments in the soil settle down in ponds while runoff Infiltration is where water quality is increased by treating water physically , chemically and biologically to remove pollutants Pollutant removal efficent substances should be used to treat water .

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Use the Bohr model to address this question. When a hydrogen atom makes a transition from the 4th energy level to the 2nd, counting the ground level as the first, what is the energy of the emitted photon? Express the answer in electron volts. Number eV What is the wavelength, in nanometers, of the emitted photon? Number nim What is the radius, in nanometers, of the hydrogen atom in its initial (4th) energy level? Number nm Solution energy in 4th level E4 = -13.6/4^2 eV E4 = -0.85 eV energy in 2nd level E2 = -13.6/2^2 eV E2 = -3.4 eV emitted energy E = E4 - E2 = -0.85 + 3.4 = 2.55 eV ===================== energy E = hc/lambda wavelength lambda = hc/E = (6.626*10^-34*3*10^8)/(2.55*1.6*10^-19) = 487.2 nm ========================== radius R = 0.053*n^2 Radius = R = 0.053*4^2 nm = 0.848 nm .

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Use Interface Engineering Some designers suggest that speech recognition should be used in a telephone menu system. This would allow users to interact with the system by speaking instead of pressing buttons on the dial pad. Give two arguments for and three arguments against the proposal. Solution Some designers suggest that speech recognition should be used in a telephone menu system. This would allow users to interact with the system by speaking instead of pressing buttons on the dial pad. Some of the advantages and Disadvantages are given below : Advantages: Disadvantages : .

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UNIX/Linux Devise wild-card patterns to match the following filenames: (i) foo1, foo2, and Foo5, (ii) quit.c, quit.o, and quit.h, (iii) watch.htm, watch.HTML, and Watch.html, (iv) all filenames that begin with a dot and end with .swp. Solution i) foo1, foo2, and Foo5 [f,F]oo[1,2,5] [f,F] means first character could be f or F then oo then last could be 1 2 5 ii) quit.c, quit.o, and quit.h, quit.? ?:any single charater after quit iii) watch.htm, watch.HTML, and Watch.html -i watch.htm[?, ] -i ignore case ? any single character character ot empty 4.all filenames that begin with a dot and end with .swp. ^.swp$ ^ denotes begining $ denotes endingof line .

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Under what conditions are quantitative tools useful in analyzing data? Qualitative tools? Solution Quantitative methods place greatest reliance on representing developments numerically. Numerical data, of many types, are useful in thinking about longer-term developments, and to a certain extent they can be useful ways of presenting Foresight results, too. As in in econometrics, quantitative methods implicitly or explicitly use simple models of some sort. For example, time series extrapolations of trends imply a model in that use time as the \"independent variable\" .

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Under what circumstances does a company prepare consolidated financial statements? Solution Consolidated Financial Statement Consolidated financial statements are the combined financial statements of the parent company and its subsidiary companies. Purpose of consolidated financial statements (CFS) is to present the financial position of parent and its all subsidiaries as a single business entity. Purpose of presentation of CFS is to provide the more meaningful information to stockholders and creditors than separate presentation by parent and each subsidiary. In these circumstances consolidation of financial statements required. However a majority -owned .

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umps from a bridge above a deep gorge. Bob watches from the bridge. Let event D be Alice\'s departure from Bob\'s location on the bridge, and event R be her return to Bob\'s location on the bridge. Carol observes these events from a a train passing over the bridge, and uses synchronized clocks on the train to measure the time between Alice\'s departure and return. (a) Which person\'s watch or clocks register(s) a proper time between events D and R? (b) Which person\'s watch or clocks register(s) the space- time interval between those events? Which person\'s watch or clocks register(s) a coordinate time between those events in some inertial frame? (c) A. Alice B. Bob C. Carol D. Alice and Bob E. Bob and Carol F. Alice and Carol T All three observers rope Solution a) time measured by a clock that has the same motion as the observer A. Alica b)D. Alica and Bob c) A. Alica .

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