Numerade

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[20%] Question 2: A single-line diagram of a 10-bus system is shown in the Figure with all positive sequence reactance's. The loads on bus 9 and bus 8 are identical 0.2+0.1j per unit constant power loads. Let a solid three-phase fault occur at bus 2 of the network. Assume the prefault voltages to be 1.05$\angle$0° p.u., neglect all prefault currents, neglect phase shift due to transformers connection, and neglect non-rotating loads. 2.1. Calculate the initial symmetrical rms current in the fault in p.u. ($I_f$=?) 2.2. Determine the per-unit voltages during the fault at buses 1, 2, and 6. ($V_1, V_2, V_{10}$ =?) 2.3. Compute the contribution from generator G1 and G2 to the fault current. ($I_{G1}, I_{G2}$=?) 2.4. The neutral current for generator 1 and 2. ($I_{n1}, I_{n2}$ =?)

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10.2 Non-right Triangles: Law of Cosines 63. A satellite calculates the distances and angle shown in Figure 15 (not to scale). Find the distance between the two cities. Round answers to the nearest tenth. Figure 15

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19. Which of the following solvents is likely to best dissolve the solute in the box based on the principle of 'like dissolves like'? (a) (b) (c) $CH_3OH$

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is a form of communication that involves a the social cognitive processing of auditory stimuli

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A PATIENT WITH BREAST CANCER PRESENTS WITH AN ABSOLUTE NEUTROPHIL COUNT OF 560/MM3 AFTER THEIR FOURTH DOSE OF CHEMOTHERAPY. THE NURSE EXPECTS THE PATIENT HAS BEEN TREATED WITH WHICH OF THE FOLLOWING AGENTS?

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An experimenter was provided with 5 unknown substances and asked to analyze them to determine whether each one was a covalent or an ionic compound. After conducting several experiments on each solid, the experimenter summarized her data. For each of the properties below, indicate what data would lead you to suspect that the compound was ionic a. Physical state Enrolled students only – Distribution Prohibited b. Color c. Odor d. Melting point e. Boiling point f. Solubility in water

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Question 3 Age at Admission (x) Readiness for Change (y) 18 5.2 23 5.3 24 6.1 35 4.2 28 5.9 1 pts What is the correlation between age at admission and readiness for change? Use the table above. (Hint: Avoid rounding as much as possible until the last step) -0.45 -0.65 -0.50 -0.55

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Changes in a single gene in a population over time are known as a. Macroevolutionary events; speciation b. Macroevolutionary events; mutations c. Microevolutionary events; speciation d. Microevolutionary events; mutations e. Morphological events; mutations and most often result from QUESTION 3 Which of the following examples provides biogeographical evidence for the process of evolution? a. Pythons retain leg bones within their body b. Marsupials evolved in Australia when it separated from other landmasses c. Whales are related to hippos because they have similar pelvic and leg bones d. All organisms have DNA e. Both B & D QUESTION 4 What is the difference between artificial selection (e.g., greyhounds that are bred for speed) and natural selection? a. In artificial selection, the genetic variation introduced into the population is limited, but in natural selection, it is not b. In artificial selection, the environment is the selective force, while in natural selection, humans are the selective force c. in natural selection, the environment is the selective force, while in artificial selection, humans are the selective force d. Unlike other species, dogs are not subject to natural selection e. Both A & C

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Question 13 2 pts In the short run, the marginal cost of the first unit of output is $25, the marginal cost of producing the second unit of output is $18, and the marginal cost of producing the third unit of output is $12 The firm's total variable cost of producing three units of output is:

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1. The ARRA of 2009 and the ESA of 2008 are described as "Keynesian" fiscal stimulus bills. Why? 2. What were the spending components of the ARRA, as described by Taylor? What percentage of the total spending in the ARRA went to each component? Is this information surprising to you in light of what you know about how the spending multiplier works? 3. This question is closely related to #2. Why where federal income transfers to the states ineffective as stimulus efforts?

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michelle f.