Numerade

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3.problem An inductor with an inductance of 0.8 H is part of a circuit that produces a current of 4 A. The current does not change in time. What is the magnitude of the voltage drop across the inductor? (in V) A: 0B: 1.6C: 3.2D: 6.4E: 133.problem An inductor with an inductance of 0.8 H is part of a circuit that produces a current of 4 A. The current does not change in time. What is the magnitude of the voltage drop across the inductor? (in V) A: 0B: 1.6C: 3.2D: 6.4E: 13

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Which statement is true? A) All of these statements are true B) Amides can be reduced to amines using lithium aluminum hydride C) Nitriles can be reduced to amines using hydrogen and a metal catalyst D) Aromatic nitro compounds can be reduced to amines using tin and hydrochloric acid

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1st Post) Reply to ONE of the following Discussion Questions with a substantive post - one that demonstrates that you understand the mathematical concepts and provides an explanation rather than just making a simple statement about the topic. A single sentence reply is not good enough. 2nd Post) Respond to ONE post in a substantive manner by building on and extending any ideas the student presented. Just repeating what the student said or only stating you liked what they said in their post is not substantive and will earn 0 points. That's a good way to start a response, but you need to ask a question, make connections based on what the student said, etc. a) One of your classmates makes the claim that the solution of an optimization problem modeled by a quadratic function occurs at the vertex of the quadratic. Where else can the optimal solution exist? Give an example showing why this statement is wrong. *If you response to a post of a person who answer this question, provide graphical or algebraic evidence that supports (or disproves) their answer.

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in a tug of war 13 children with an average force of 150N per child

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Many employers are concerned about employees wasting time by surfing the Internet and e-mailing friends during work hours. The article "Who Goofs Off 2 Hours a Day? Most Workers, Survey Says" summarized data from a large sample of workers. Suppose that the CEO of a national marketing firm wants to determine the difference in mean wasted time during an 8-hour workday for employees of her company at two different locations. Each person in a random sample of 10 employees from Location A (population 1) is asked about daily wasted time at work (in minutes), and 10 employees from Location B (population 2) are asked the same question. Participants were guaranteed anonymity to obtain truthful responses. Suppose the resulting data are as follows. Location A 81 137 147 84 107 144 103 125 148 76 Location B 107 104 109 113 101 103 117 116 105 100 (a) Calculate the point estimate for the difference in the population means. (b) Determine the margin of error for the 90% confidence interval for the difference in population means. (Use a table or technology. Round your answer to three decimal places.) (c) Find the 90% confidence interval. (Round your answers to three decimal places.)

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19.105 A precision experiment sits on an optical table that is isolated from ground motion resulting from nearby equipment vibrations. The sys- tem can be modeled with a single mass and spring as shown. The weight of the table and experiment, modeled by block A, is 1200 lb. and the displacement of the ground B is 0.03 in. at a frequency of 100 Hz. Knowing that the resulting amplitude of the table is to be restricted to less than $x_{max} = 4 \times 10^{-5}$ in., determine (a) the required spring stiffness, (b) the range of forcing frequencies, using this stiffness, for which the table will have an amplitude less than $x_{max}$

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Consider the series RLC circuit shown below. Assume that v(t) is 0 for t<0 and 7 volts for t>0. Assume that $R_s = 50 \Omega$, $R_E = 350 \Omega$, $C = 2 \mu F$, and the inductor is assumed to be non-ideal with a value of $L = 400 mH$ and a coil resistance of $120 \Omega$. (a) What is the final value of the capacitor voltage? $v_{\infty} =$ (b) What is the final value of the current in this circuit? $i_{\infty} =$ (c) What is the neper frequency for this circuit? $\alpha =$ (d) What is the undamped natural frequency for this circuit? $\omega_o =$ (e) What is the damped natural frequency for this circuit? $\omega_d =$ (f) Is the circuit overdamped, critically damped, or underdamped? (g) Determine a mathematical expression for the capacitor voltage $v_c(t)$ for $t > 0$. (h) Determine the value of C needed to make the circuit critically damped. $C = $

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a. Consider $u(k) = \begin{cases} -2, & k = 0\\ 0, & k \neq 0 \end{cases}$ give the z-transform U(z) using general definition of z-transform. b. Find x(0), x(1), and x(3) for the flowing difference equation: Note: don't use z-transform x(k) - 2x(k - 1) + 4x(k - 2) = 2 e(k) - e(k - 1) Where $e(k) = \begin{cases} 1, & k \ge 0\\ 0, & k < 0 \end{cases}$ x(-2) = x(-1) = 0

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For Questions 1-4, let the random variable X follow a Normal distribution with mean = 200 and variance Ïƒ^2 = 625. Q1. A random sample of n = 50 is obtained. What are the mean and variance of the sample mean, XÌ„? a. Mean ==> b. Variance ==> Q2. What is the probability that XÌ„ is greater than 204? a. What is the Z-Score for XÌ„ greater than 204 ==> b. P[Z > Z-Score] ==> Q3. What is the probability that XÌ„ is between 198 and 211? a. What is Z-Score1 for XÌ„ greater than 198 ==> b. What is Z-Score2 for XÌ„ less than 211 ==> Q4. A second random sample of n = 75 is obtained. What is the probability that XÌ„ is between 198 and 211? a. What is Z-Score1 for XÌ„ greater than 198 ==> b. What is Z-Score2 for XÌ„ less than 211 ==>

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5. Suppose you are given the following undirected weighted graph:

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nerea r.