Numerade

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Question (5) The operation of a pumped storage hydro facility is to be examined. The facility is composed of an upper reservoir, a lower reservoir, a turbine/generator, a motor/pump, and associated valves and controls. The overall strategy is to pump from the lower reservoir to the upper reservoir during periods of light electrical demand (typically nights) and cheap base-loaded rates and to generate electricity by flow from upper reservoir to lower during periods of high system demand (typically days and evenings). Pumped hydro facilities can be rapidly brought online when demand peaks and can be quickly shut down when demand lessens. • Tunnel Length: 7000 ft • Tunnel Diameter: 60 ft • Absolute roughness (ε): 0.01 ft o Reservoir elevation difference: 900 ft o Minor loss fittings: 5 gate valves, 15 elbows, 12 ball valves Turbine/generator efficiency: 0.90 • Motor/Pump efficiency: 0.81 Upper Reservoir Qgen Turbine/ Pump *Schematic only. See problem statement for elbows, valves, etc. Schematic not representative of actual piping path. Lower Reservoir Opump (a) Find the maximum power (in hp) that can be generated. (Examine a range of flow rates: 50,000 cfs to 250,000 cfs with an interval of 10,000 cfs to determine where maximum is found) (b) What is the flow rate associated with the max power from part (a)? (c) If the pumping flow rate is the same as the generating flow rate, what is the pump power required?

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Find the measure of angle $ C $. The measure of angle $ C $ is $ \circ $. $ \square $

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$ \frac{2}{9}-\frac{1}{Q} $

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Which of the following is true about ribosomes? their composition is universal and the same in all organisms they are composed of a small subunit and large subunit the tRNAs are transcribed in the nucleolus ribosomes are made in the endoplasmic reticulum ribosomes are assembled at the nuclear envelope

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1) Give the IUPAC names for each of the following: a) b) c) d) 2) Each of the following names is incorrect. Give the correct name. Incorrect Name trans-4-Hexene 1,1,2-Trimethylethene (Z)-3-Chloro-3-pentene 5-Methylcyclopentene Correct Name

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After you fall off a ladder, you fear heights in general. What term applies to your behavior? schedule of reinforcement disequilibrium principle stimulus generalization dishabituation

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Let V = (2, ?). For u, v ? V and a ? R define vector addition by u ? v := uv - 2(u + v) + 6 and scalar multiplication by a ? u := (u - 2)^a + 2. It can be shown that (V, ?, ?) is a vector space over the scalar field R. Find the following: the sum: 8 ? 5 = 20 the scalar multiple: -5 ? 8 = 2.000128 the additive inverse of 8: ? 8 = the zero vector: 0 ? y = 3 the additive inverse of x: ? x =

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On January 1, the total market value of the Tysseland Company was $60 million. During the year, the company plans to raise and invest $10 million in new projects. The firm's present market value capital structure, here below, is considered to be optimal. There is no short-term debt. Debt Common equity Total capital $30,000,000 30,000,000 $60,000,000 New bonds will have an 8% coupon rate, and they will be sold at par. Common stock is currently selling at $30 a share. The stockholders' required rate of return is estimated to be 12%, consisting of a dividend yield of 4% and an expected constant growth rate of 8%. (The next expected dividend is $1.20, so the dividend yield is $1.20/$30 = 4%.) The marginal tax rate is 25%. a. In order to maintain the present capital structure, how much of the new investment must be financed by common equity? Round your answer to the nearest dollar. $ b. Assuming there is sufficient cash flow for Tysseland to maintain its target capital structure without issuing additional shares of equity, what is its WACC? Round your answer to two decimal places. %

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The manager of a coffee shop wants to know if his customers' drink preferences have changed in the past year. He knows that last year the preferences followed the following proportions -34% Americano, 21% Cappuccino, 14% Espresso, 11% Latte, 10% Macchiato, 10% Other. In a random sample of 450 customers, he finds that 115 ordered Americanos, 88 ordered Cappuccinos, 69 ordered Espressos, 59 ordered Lattes, 44 ordered Macchiatos, and the rest ordered something in the Other category. Run a Goodness of Fit test to determine whether or not drink preferences have changed at his coffee shop. Use a 0.05 level of significance. Hypotheses: Ho: There is ______ in drink preference this year. H?: There is ______ in drink preference this year. Select the best fit choices that fit in the two blank spaces above. no difference, a difference a difference, no difference no difference, no difference a difference, a difference

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Note: Your assignment will be checked for originality via the Turnitin plagiarism tool.

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danny h.