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regina duarte

regina d.

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What is the hydroxide ion concentration of a sample that registers (7.0 x 10^0) on pH meter? Answer in scientific notation to two significant digits. Use the abbreviation for the units.

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25 An ester bond is a characteristic of .... 1. glycerides. 2. fatty acids 3. glycerol. 4. proteins. 5. disaccharides. 6. I do not know.

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In which geometric case is it possible for an oblique triangle to have either 0, 1, or 2 solutions? SAS ASA AAS SSA

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A particle traveling through space which encounters a barrier is either transmitted (i.e., it goes through the barrier) or is reflected (i.e., it bounces back). For a certain type of particle and barrier, we know that 85% of particles are transmitted. (a) If 60 particles encounter the barrier, and we are interested in the number of particles that are transmit ted, what is a good distribution to estimate that number? Include the parameters for that distribution. (b) What is the expected value and standard deviation for the distribution identified in part a? (c) Using the distribution identified in part a, what is an estimate for the probability that 55 or more particles are transmitted? (d) Would a normal distribution adequately approximate this distribution? Explain why or why not. Regardless of your assessment of adequacy, calculate the probability from part b using the approxi mation. Is it close?

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III. Short Answer Section (1/2 Page each question). 4. Consider an economy which produces oil and manufactured goods, with the price of oil, given as $p_oil$ and the price of manufactured goods given as $p_m$. Using a diagram with the amount of oil on the vertical axis and the amount of manufactured goods on the horizontal show the initial production and consumption of the economy if the relative price without international trade is $\frac{p_m}{p_o}$. Show what happens when there is an increase world price of oil for the production of oil and manufactured goods in the economy and how consumers might be better off after specialization and international trade.

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Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis. $y = x^6$, $y = 1$ about $y = 5$

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Position the following items in order of decreasing size. F-actin Troponin Myofibril Fascicle Myofilament Tropomyosin Sarcomere Ca2+ 1. Largest 2. 3. 4. 5. 6. 7. 8. 9. Smallest

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Parathyroid hormone and vitamin D work to increase blood calcium levels, therefore they stimulate osteoblasts to deposit bone by producing calcified matrix. stimulate osteoclasts to move calcium from the blood and into the bone. stimulate osteoclasts to resorb bone and release calcium into the blood. stimulate osteoblasts to resorb bone and lower blood calcium levels.

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1. A three-phase transmission line is 200 mile-long. The distributed line parameters are r = 0.2?/mi, l = 2.1 mH/mi, c = 0.02µF/mi, g = 0 The transmission line delivers 40MVA at 132kV at power factor 0.95 leading. Treat the line as \"long\" transmission line. a. What is the driving impedance of the transmission line? b. What is transmission line efficiency? 2. Treat the line in question 1 as \"medium-length\" line. a. Find the II equivalent circuit of the transmission line. b. What is the voltage gain of the transmission line? 3. For the transmission line in problem 1, consider it is Surge Impedance Loaded (SIL). a. What is the voltage gain $|V_2|/|V_1|$, current gain $|I_2|/|I_1|$? b. What is the driving point impedance $|V_1|/|I_1|$ of the transmission line? c. What is the complex power again and real power gain? 4. Adopt the transmission line in problem 1 in short-distance power transmission. The length of the transmission line is 30 miles. Find out the voltage and current of the sending end, if the operation condition is unchanged as problem 1.

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1. (from Osborne & Rubinstein, p. 172-3) Exchange economy with uncertainty and indivisible goods. A show will take place only if the weather permits. To watch the show, a person needs a ticket, which will not be refunded if the show is cancelled. Each individual has a Bernoulli utility function that takes the value 10+m if the individual watches the show and m if she does not, where m is the amount of money she holds. Of the $n = n_1 + n_0$ individuals, $n_1$ each initially holds a single ticket and $n_0$ each has initially an amount of money greater than 10 but no ticket. Each individual $i$ believes that the show will take place with probability $t_i$, where $0 < t_n < t_{n-1} < \dots < t_2 < t_1 < 1$. Define and characterize the competitive equilibria of the variant of an exchange economy with an indivisible good and money that models this situation.

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