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rafael singh

rafael s.

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Extra Credit - Compressor Sizing for a Mars Supersonic Wind Tunnel A closed-loop supersonic wind tunnel is being designed to test scale-models of supersonic vehicles that will fly through the Martian atmosphere. The goal is to produce a Mach 1.85 flow of CO2 in the test section, with static temperature and pressure there of 258 K and 8.22 kPa. Furthermore, the test section will have a rectangular cross-section, with a width of 91.2 cm (~3 ft) and a height of 68.7 cm (~2.25 ft). Test Section Compressor Cooler The test section will be supplied with CO2 from the exit of a steady-flow compressor; the inlet stagnation pressure of the compressor will be 72% of the stagnation pressure in the test section. What is the minimum amount of shaft power that will have to be supplied to the compressor to run this wind tunnel? For this problem, assume that CO2 is well-modeled as a thermally and calorically perfect gas with molecular weight 44.02 and cp/R = 4.74.

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Which of the following statements lists revenues and expenses and shows the amount of profit a business makes for a specified period of time? Group of answer choices 1. balance sheet 2. statement of retained earnings 3. income statement 4. cash flow statement

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Given that the executive power has grown significantly over the years, should President Biden take action on his own to address income inequality, the infrastructure, healthcare and others? What mechanism does he have to take such actions? Would it work? Why or why not?

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QUESTION 9 Anushka was examining a cell under the microscope and she noticed the formation of a cell plate in the midline of the cell and the formation of nuclei at opposite poles of the cell. The cell under examination was most likely a(n) animal cell in the M phase of the cell cycle. Odividing bacterial cell. plant cell undergoing cytokinesis. animal cell undergoing cytokinesis. plant cell in the anaphase stage.

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3. For the functions below, do the following: (i) Find the first Taylor Polynomial $T_1(x)$ for $f(x)$ based at $b$. (ii) Find a bound for the error in approximate the function $f(x)$ by the first Taylor polynomial $T_1(x)$ for $f(x)$ based at $b$ on the interval $I$. (iii) Find the second Taylor Polynomial $T_2(x)$ for $f(x)$ based at $b$. (iv) Find the interval $J$ for the second Taylor polynomial containing $b$ so that the error is no more than 0.01 on $J$. (a) $f(x) = \ln(1 - x)$, $b = 0$, $I = [- rac{1}{2}, rac{1}{2}]$ (b) $f(x) = \sin x$, $b = \frac{\pi}{6}$, $I = [- rac{\pi}{4}, rac{\pi}{4}]$

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Cost is in dollars and x is the number of units. Find the marginal cost function MC for the given cost function. C(x) = 400 + 20x + 0.03x^2. MC =

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We have given X ~ uniform [ 1000, 1040] then find the probability of less than 1013

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Ex. 7.7 Topological sort What happens if Tarjan's DFS-based reverse topological sort is performed on a directed graph that has a cycle? Will it detect a cycle? The answer will depend on the specifics of the DFS. Use pure reason — as opposed to a search through the text — to figure out at least two different answers to this question. Ex. 7.8 Topological sort What happens if a BFS-based topological sort is run on a directed graph that contains a cycle.

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are there health concerns that can occur with a severe restriction of carbohydrates?

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Consider the 6 cards displayed in a fortune teller's table with numbers x={1, 2, 4, 5, 7, 9). The possible samples which can be drawn from the sample size of 5 without replacement is 6. Which of the following is not a value of sample mean $\bar{x}$ ? A. $\bar{x}$= 3.8 C. $\bar{x}$= 4.2 B. $\bar{x}$= 5.6 D. $\bar{x}$= 5.2

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