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esther vega

esther v.

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Which of the following would oxidize solid tin? A gold metal ion Solid potassium A iron metal ion ?Solid cobalt

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Write the two resonance structures for the pyridinium ion, C$_5$H$_5$NH$^+$.

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what are the relationship btween wifi generations( G1,G2,G3,G4.) and wifi security. answere it based on acadamic refrencves specifically from published in renowned venues, namely ACM, IEEE, Elsevier, and Springer.

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For the equation below, r(t) is the position vector of a particle in space at time t. Find the angle between the velocity and acceleration vectors at time t = 0.\\ r(t) = (4 \ln (t^2+1))\mathbf{i} + (\tan^{-1}t)\mathbf{j} + \sqrt{t^2+1}\mathbf{k}\ The angle between the velocity and acceleration vectors is $oxed{ }$. (Type an exact answer, using $\pi$ as needed.)

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True or False Questions: 1) In a liquid-to-gas heat exchanger, the fins are placed in the liquid side. 2) A blackbody is a perfect emitter of radiation. 3)A perfect blackbody is one that absorbs all incoming radiation and does not reflect any. 4) Adding more insulation to a plane wall always decreases heat transfer. 5) Adding more insulation to a plane roof might increase heat transfer. 6) In some scenarios, a fin slows down the heat transfer from the surface. 7) The thermal conductivity of the fin material should be as low as possible.

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Question 1 (1 point) Saved Kentucky Supply Co., which had no beginning balance in its Accounts Receivable and Allowance for Doubtful Accounts, earned $80,000 of revenue on account during 2014. During 2014, the company collected $64,000 of cash from its receivables accounts. Kentucky estimates that it will be unable to collect 2% of revenue on account. The amount of net realizable value of receivables on the December 31, 2014 balance sheet would be: 1) $16,640. 2) $17,400. 3) $16,000. 4) $14,400.

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A mode switch is usually more expensive than a process switch. ? True ? False

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TOPIC: SHOCK REFLECTIONS 3. Air at a pressure & temperature of 40 kPa & -30°C flows at Mach 3.0 down a wide duct. The upper wall of the duct turns sharply through an angle of 5°C leading to the formation of an oblique shock wave. Find a) Mach number, temperature, and pressure behind this shock wave. [5] M? = 3 "Reflected" shock P? = 40 kPa T? = -30°C As shown in the figure, this shock wave strikes the lower wall of the duct exactly at a point where the lower wall turns away from the flow through an angle of 2°. Find b) Mach number, pressure, temperature & velocity behind the "reflected" wave. [5] Assignment #3 Total Marks: 30 ME F415 Gas Dynamics Due Date: 05.12.2019 TOPIC: SHOCK POLAR For shock polar and pressure deflection diagrams, you have to use 10 points to draw the curve. You can draw only the left running or right running wave depending on the problem. Only the weak solution to the shocks can be plotted. 4. Plot the non-dimensional shock polar for Problem 3. Find final velocity V?. [5] TOPIC: PRESSURE DEFLECTION DIAGRAM 5. Plot the pressure deflection diagram for Problem 3 in shock reflections. Find final pressure P?. [5]

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Suppose all the jobs that enter a computer system can be classified as CLASS A (0-50K), CLASS B (51-100K), or CLASS C (more than 100K), according to the maximum memory requirement (MAXCORE) you decide for your system. The system provides a multiprogramming environment with three FIXED SIZE PARTITIONS. Partition A is for Class A jobs, Partition B is for CLASS A or CLASS B jobs, and Partition C is for CLASS A, B, or C jobs. When Partition A becomes free, the CLASS A job that has waited longest is run. When Partition B becomes free, the CLASS B job that has waited longest is run. If there are no CLASS B jobs waiting, the next CLASS A job is run. Following: Generate a random number I. (Please write the program so that a different SEED may be entered to generate a different sequence of random numbers if desired. The value of I should be an integer between 0 and 200. CASE 1: i.1 1.2 1.3 0 <= I <= 49: A job has entered the system 0 <= I <= 25: Class A job enters Queue A 26 <= I <= 39: Class B job enters Queue B 40 <= I <= 49: Class C job enters Queue C. CASE 2: 2.1 2.2 2.3 50 <= I <= 100: Job has finished execution. 0 <= I <= 75: Partition A is now empty 76 <= I <= 89: Partition B is now empty 90 <= I <= 100: Partition C is now empty The three queues should be implemented as linked structures. If a partition becomes empty and there is no job that can be run in it, generate the next random number and continue. Repeat for 100 iterations and at every fifth iteration, print the following information: a) Current state of each queue b) Current state of each partition c) How many jobs of each class have been run so far.

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Find the triple integral of the function \(f(x, y, z) = x^2 + 15y^2 - z\) over the region W given by the rectangular box \(0 \le x \le 3, \quad -1 \le y \le 1, \quad 7 \le z \le 8.\) Enter the exact answer. \(\int_W f dV = \)

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