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Problem 2: (30 points) Consider the frame structure shown below

## Problem 2: (30 points) Consider the frame structure shown below

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A sphere having a 2000-N weight hangs at point D from three ropes attached to points A, B and C as shown in the figure. All dimensions are in meters. (a) Draw free body diagram for the sphere (5 points) (b) Express all known and unknown forces in Cartesian vector form (10 points) (c) Write equations of equilibrium including the known and unknown forces (5 points) (d) Set up equations in matrix form

## A sphere having a 2000-N weight hangs at point D from three ropes attached to points A, B and C as shown in the figure. All dimensions are in meters. (a) Draw free body diagram for the sphere (5 points) (b) Express all known and unknown forces in Cartesian vector form (10 points) (c) Write equations of equilibrium including the known and unknown forces (5 points) (d) Set up equations in matrix form

The purification of hydrogen gas can be achieved by diffirsion through a palladium sheet. Compute the number of kilograms of hydrogen that pass per second through a 6_-mm thick sheet of palladium having an area of 0.35 m2 at 600oC. Assume a diffirsion coeffrcient of 1.7 ” l0-8 m2ls, that the respective concentr;;;at the high- and low-pressure sides ortn” pt” *” tlla 0.3 kg of hydrogen per cubic meter of palladium, and that steady-state conditions have been attained. (10 points)

## The purification of hydrogen gas can be achieved by diffirsion through a palladium sheet. Compute the number of kilograms of hydrogen that pass per second through a 6_-mm thick sheet of palladium having an area of 0.35 m2 at 600oC. Assume a diffirsion coeffrcient of 1.7 ” l0-8 m2ls, that the respective concentr;;;at the high- and low-pressure sides ortn” pt” *” tlla 0.3 kg of hydrogen per cubic meter of palladium, and that steady-state conditions have been attained. (10 points)

Homework 3 For Homework 3, answer each of the five questions below from this article Granena, G., & Long, M. (2013). Age of onset, length of residence, language aptitude, and ultimate attainment in three linguistic domains. Second Language Research, 29, 311-343. You will probably need no more than a paragraph for each question. These are very general questions about the main points of the article. As I am interested in how you understand the article, do not use quotes for your answers, but rather your own words. 1. What was the purpose of the study? 2. Who did they investigate? 3. What was the procedure? 4. What were the results? 5. What are the implications of the study for our understanding of language development in general and the Critical Period Hypothesis in particular?

## Homework 3 For Homework 3, answer each of the five questions below from this article Granena, G., & Long, M. (2013). Age of onset, length of residence, language aptitude, and ultimate attainment in three linguistic domains. Second Language Research, 29, 311-343. You will probably need no more than a paragraph for each question. These are very general questions about the main points of the article. As I am interested in how you understand the article, do not use quotes for your answers, but rather your own words. 1. What was the purpose of the study? 2. Who did they investigate? 3. What was the procedure? 4. What were the results? 5. What are the implications of the study for our understanding of language development in general and the Critical Period Hypothesis in particular?

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What is the significance of points A and B in Figure 1.1?

## What is the significance of points A and B in Figure 1.1?

Figure 1.1 displays a Sigmoid Curve of IT processing capabilities … Read More...