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emma perry

emma p.

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Question 3 [15] The following 3-dimensional stress state exists at a point. $\sigma_{11}$ = 200 Mpa, $\sigma_{22}$ = 100 MPa, $\sigma_{33}$ = 450 MPa, $\sigma_{12}$ = 0 MPa, $\sigma_{13}$ = 100 MPa and $\sigma_{23}$ = 300 MPa, Fy = 680 MPa, E=220 GPa, μ=0.33. 3.1 Display as a stress tensor. [3] 3.2 Calculate the maximum shear stress. [6] 3.4 Check for yielding with the Von Mises and Tresca criteria. [6]

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Use the Change of Variables Formula to evaluate the definite integral integrate 1/(sqrt(5x + 2)) dx from 0 to 3 (Use symbolic notation and fractions where needed .)

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Rhianna is a 25-year-old graduate student who frequently misses classes because she is afraid of being judged by her peers because of her appearance. Although all her friends tell her she looks just fine, Rhianna believes that her blemishes are unattractive, her hands are too chubby, and her feet are too big. She cannot stop thinking about what she considers to be serious flaws in her appearance. Compared to her friends, Rhianna is likely to __________. A. have higher rates of suicidal thinking B. excel in time management C. seek out social situations D. be spontaneous

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Find all the roots of the given function. Use preliminary analysis and graphing to find good initial approximations.\ f(x) = 2e^{-x} - \frac{x+4}{5}\ The function has a root(s) at x \approx .745408. (Do not round until the final answer. Then round to six decimal places as needed. Use a comma to separate answers as needed.)

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What is the primary function of G-protein-linked receptors in cell signaling? Directly influencing gene expression. Opening ion channels in the plasma membrane Transferring phosphate groups to tyrosine residues. Activating enzymes associated with the receptor. This question was created or adapted by your instr

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What criterion is used to split nodes in a decision tree?

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The price-level effect describes a change in the interest rate due to a change in the expected inflation rate.

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Question 15 2 pts When a consumer spends their income on a nice meal from a neighborhood restaurant, this would be considered: a stock differed spending a leakage current spending

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Find $zw$ and $\frac{z}{w}$. Write each answer in polar form and in exponential form. $z = 5 \left(\cos \frac{2\pi}{9} + i \sin \frac{2\pi}{9}\right)$ $w = 10 \left(\cos \frac{\pi}{9} + i \sin \frac{\pi}{9}\right)$ The product $zw$ in polar form is $ $ and in exponential form is $ $(Simplify your answer. Type an exact answer, using $\pi$ as needed. Use integers or fractions for any numbers in the expression.) The quotient $\frac{z}{w}$ in polar form is $ $ and in exponential form is $ $(Simplify your answer. Type an exact answer, using $\pi$ as needed. Use integers or fractions for any numbers in the expression.)

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2. (5 pts) Find a basis for the row space and the nullspace of the matrix A. Verify that \text{rank}(A) + \text{nullity}(A) = n, where n is the number of columns of A. $A = \begin{bmatrix} 1 & 0 & -2 & 0 \\ 4 & -2 & 4 & -2 \\ -2 & 0 & -1 & 3 \end{bmatrix}$

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