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amy miralles

amy m.

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The system shown in the following figure is balance. What is the torque created by the 50 g mass? 50 g 18 cm 12 cm 9,000 N-m 900 N-m 9 N-m 0.09 N-m

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Multiple Choice Question Faithful representation requires that information is complete, neutral, and ? free from material error. ? within cost-benefit constraints. ? confirmatory. ? relevant.

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4.

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In moving along a demand curve, which of the following is not held constant? prices of complementary goods the price of the product itself. consumer incomes price expectations

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Polymer: Polyethylene Sail. What is the bonding between atoms within the polymer chain? A Transfer of electrons B 3-D sharing of electrons C 1-D sharing of electrons D Sea of delocalized electrons E Temporary attractive force resulting when electrons in two adjacent atoms occupy positions that make the atoms form temporary dipoles

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II. (30+44+44=118 pts) This part contains two code-writing questions, and one question on a simple class implementation. 1. Consider the following function. def some_fun(infilename, outfilename): ifile = open(infilename, 'r') ofile = open(outfilename, 'w') for line in ifile: L = list(filter(lambda x: len(x) > 1, line.split())) for item in L: ofile.write(item + " ") ofile.write('\n') ifile.close() ofile.close() Suppose now that we have a file called "in.txt" whose contents are as follows: a one b two c three first 9 120 12 24 12 212 second 0 0 6 12 12 12 third 1 2 1 2 1 2 Assume we have imported the function some_fun. What are the contents of the file "out.txt" after the function call result of the following function call? >>> some_fun("in.txt", "out.txt") Answer: Explain, in general terms, exactly what the function some_fun is doing. Give a general explanation of the function's actions (do not simply repeat the code in English sentences Answer:

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Question 4 (4 points) A simple pendulum is made up with a 0.171-m long string tied to a 10.0-g ball. A geophysicist uses it to measure local g value. He finds that it takes 8.33 seconds to complete 10 full oscillations. What is the local g value?

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Perform Degree of freedom analysis on the following System. The fractional conversion of the component X is 50%. Write the list of all Unknowns. DOF: X + 2Y \rightarrow Z n1 = 100 mol/min n2 = (mol/min) Reaction Unit y_{A,1} = 0.3 y_{B,1} y_{A,2} y_{B,2} y_{C,2} Unknowns:

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Determine the measure of the strength of the linear relationship between the two given variables. 1. The table below shows the number of absences of 8 students and their corresponding final grades. Use the data below to determine the correlation of the two sets of scores. X Y x$^2$ Y$^2$ XY 6 82 2 86 15 43 9 74 12 58 5 90 8 78 3 85 $\sum X =$ $\sum Y =$ $\sum X^2 =$ $\sum Y^2 =$ $\sum XY =$ $(\sum X)^2 =$ $(\sum Y)^2 =

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Assessment 2. Multiple Choice Directions: Solve the following problems involving distinguishable permutation and write the letter of the correct answer on separate sheels. 1. Which of the following is equivalent to $P = \frac{8!}{4!4!}$? A. 1 B. 14 C. 70 D. 2520 2. Which of the following describes the number of permutations of the letter of the word SCHOOL? A. $P = 6!$ B. $P = \frac{6}{2}$ C. $P = \frac{6}{4}$ D. $P = \frac{6}{4}$ 3. Find the number of permutations of the letter of the word MATHEMATICS? A. 39 916 800 B 9 979 200 C 6 652 800 D. 4 989 600

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