Numerade

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Evaluate. (1-3^(2))^(2)+2*(-5)

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A 1.60 mol sample of an ideal gas with Cym = 5/2R, at 2.82 bar, 340.0 K is expanded adiabatically against an external pressure of 0.230 bar until the final pressure is 0.250 bar. What is the final temperature of this process?

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Which of the following best describes city elections in Texas? They are partisan elections. They are non partisan elections. The mayor is elected in a partisan election and the city council is elected in a non-partisan election. Mayors and city council members are appointed by the Texas legislature.

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Consider the Boundary-Value Problem: $9 \frac{\partial^2 u}{\partial x^2} = \frac{\partial^2 u}{\partial t^2}$, $0 < x < 2$, $0 < t < 5$ $u(0, t) = 0$, $u(2, t) = 0$, $0 \le t \le 5$ $u(x, 0) = 3x(x - 2)$, $0 \le x \le 2$ if $n = 6$, what is the minimum value of $m$, which makes the explicit finite difference method stable when applied to the above problem? 45 60 30 18

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Fill in the table with the appropriate answers from the list. There might be more than one possible correct answer for each box. but you will choose only one answer from the dropdown list for each box. Answers from the dropdown list may be used once, more than once, or not at all. DNA Damage Source of DNA Damage First Line of Defense Repair Mechanism Deaminated cytosine Reactive Oxygen Species BER (base excision repair) Pyrimidine dimers UVB radiation. NER (nucleotide excision repa Abasic site Aflatoxin Cell death T-G basepairing Replication Double strand break in a non-dividing cell X-rays Insertion Intercalating agent MMR (mismatch repair) NHEJ (non-homologous end MMR

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Four particles A, B, C and D are distributed in four energy levels $\epsilon_0 = 0$, $\epsilon_1 = \epsilon$, $\epsilon_2 = 2\epsilon$, $\epsilon_3 = 3\epsilon$ It is not dissolved, provided that the total energy of the system is $E = 6\epsilon$ What is the number of macroscopic cases and the number of microscopic cases for each case of this system?

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Calculate the voltage V? across the 80 Ohm resistor in the circuit shown below and enter your answer in the blank provided. 35 ? + 12.17 V - + 40 V + V? 80 ? I

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$\text{V}_m = 30 \text{ V}$ \newline $\text{R} = 10 \Omega$ \newline Using the simplified model of diode, find the dc output (average) value of the output voltage (in volt)

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Calculate the freezing point depression of a Drug B solution. Drug B 5.8% (FP depression, 1% solution = 0.12 °C) Report your answer to two decimal places. DO NOT include unit. Your Answer: Answer

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Question 1 (a) [4 points] What is the optimum shape of a mirror used in an astronomical telescope? Use Fermat's principle to calculate the mathematical expression that describes this mirror (The optimum shape will focus light from a plane wave into a point source). Provide the equation for the mirror surface in two dimensions (e.g. x & y) (b) [4 points] Along the optical axis, the distance between the focal point and the mirror is a fixed length $f$. What is the separation between this focal point and the mirror along a direction perpendicular to the optical axis? (c) [4 points] A CCD camera is placed at the focal plane of the mirror. The pixel separation in the CCD is 10 µm. What angular difference is measured from pixel to pixel due to the magnification of the mirror? (d) [4 points] If the focal length of the mirror ($f$) is 10 m, what is the smallest angle that can be resolved in the telescope (based on the pixel size of the CCD camera)? (e) [2 points] What is the curvature of this mirror at the optical axis? (f) [2 points] Even with an ideal mirror, the image at the focal point will not be a point. What physics will affect the size of the image at the focal point?

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jose luis b.