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carlos williamson

carlos w.

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2. Explain why monopolistic competitive firms make zero economic profit in the long-run. Be very precise.

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occurs when those who have observed an emergency do not help the victim of that emergency. Reciprocal empathy Eyewitness altruism Bystander effect Diffusion of responsibility

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2. Did the mass of the hook affect your measurement of $\rho_s$? Explain.

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The National Institute on Drug Abuse oversees the government's research on drug abuse and addiction. True orFalse

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Determine whether the statement is true or false. If the statement is false, make the necessary change(s) to produce a true statement. A system of two equations in two variables whose graphs are a circle and a line can have four real ordered-pair solutions. Choose the correct answer below. A. The statement is false. The correct statement is \"A system of two equations in two variables whose graphs are a circle and a line can have only three real ordered-pair solutions.\" B. The statement is false. The correct statement is \"A system of two equations in two variables whose graphs are a circle and a line can have only one real ordered-pair solution.\" C. The statement is false. The correct statement is \"A system of two equations in two variables whose graphs are a circle and a line can have two or one real ordered-pair solutions.\" D. The statement is true.

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Compound A reacts with Compound B to form only one product, Compound C, and it's known the usual percent yield of C in this reaction is 46.%. Suppose 8.5 g of A are reacted with excess Compound B, and 6.2 g of Compound C are successfully isolated at the end of the reaction. What was the theoretical yield of C? Round your answer to the nearest 0.1 g. How much B was consumed by the reaction? Round your answer to the nearest 0.1 g.

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A stock had returns of 22 percent, 1 percent, -27 percent, 19 percent, and 7 percent annually for the past 5 years. Based on these returns, what is the approximate probability that this stock will earn at least 60 percent in any one given year? Please show work in Excel.

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6. Suppose an object moving with speed u in the lab frame brightens and dims periodically with a frequency ω* = 1/Δt* in its rest frame. (a) Determine the frequency of this flickering in the lab frame if synchronized clocks were available everywhere in the lab frame. (b) Now suppose that you are at a fixed location and the object is moving toward you. Calculate the frequency of the flickering you would observe with your specific clock. Does this differ from part a? Why or why not? To transit a length R* in that frame. (If the source is spherical in the rest frame, the light crossing time is the same in all directions in that frame). Write R* in terms of Δt* and then in terms of Δtobs, using part (b). Compare the relative values of R* for non-relativistic vs. highly relativistic motion for a fixed Δtobs.

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2. One version of a family's common preferences utility function can be $U(c_m, c_f) = c_m^\alpha c_f^{1-\alpha}$ Where $c_m$ and $c_f$ are the consumption of the family's product (Z) for person m and person f, respectively. a If the family wants to choose $c_m$ and $c_f$ to maximize their utility subject to budget constraint $Z_{mf} = c_m + c_f$, solve for their optimal choice of consumptions. b Using the results from Weiss's model (solved in lecture and the reading) that an individual i's consumption of Z outside of marriage is $\frac{1}{4}w_i$, and the couple's total married consumption is max$(w_m, w_f)$, find the gains from marriage for both parties if $w_m - w_f = w$ (your answer will be in terms of w and $\alpha$).

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Let S be the set of all singular matrices and S be a subset of IR^2 such that S = {(2+y, -y) | a ∈ IR}. a- Is S a subspace? Justify your answer. b- Is S a subspace of IR^2? Justify your answer.

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