In 1911, Ernest Rutherford discovered the nucleus of the atom by observing thescattering of helium nuclei from gold nuclei. If a helium nucleus with a mass of 6.68 10-27 kg, a chargeof +2e, and an initial velocity of 1.50 107 m/s is projected head-on toward a gold nucleus with a chargeof +79e, how close will the helium nucleus come to the gold nucleus before it stops and turns around?(Assume the gold nucleus is held in place by other gold atoms and does not move. Also assume that theinitial distance of the helium nucleus from the gold nucleus is very large.)

 

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In 1939 or 1940, Emanuel Zacchini took his human-cannonball act to an extreme: After being shot from a cannon, he soared over three Ferris wheels and into a net (Fig. 4-39). Assume that he is launched with a speed of 27 m/s and at an angle of 52°. (a) Treating him as a particle, calculate his clearance over the first wheel. (b) If he reached maximum height over the middle wheel, by how much did he clear it? (c) How far from the cannon should the net’s center have been positioned (neglect air drag)?

 

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In 1943, Abraham Maslow proposed a theory of motivation referred to as the hierarchy of needs. Levels 1-4 of the hierarchy pertain to achieving “deficit” human needs such as food, water, shelter, financial security, love, and respect. Maslow argues that when all of “deficit” needs are met, humans become motivated to pursue self-actualization (i.e., fulfillment of one’s potential), which is considered a “being” need. In the quote above, Maslow refers to achieving self-actualization through education. Certainly, your motivation to obtain a degree may come from the intrinsic motivation to fulfill your potential or to expand your knowledge in a subject that interests you. However, unless you are independently wealthy, you probably have more practical reasons for pursuing a degree. For example, you might be extrinsically motivated to obtain a degree because you know it will lead to a promotion and better pay, which would help you meet the “deficit” needs in Maslow’s hierarchy. 

In this discussion, you will examine your motivations for pursuing a degree, based on Maslow’s hierarchy of needs and other theories of motivation. As you do so, keep in mind that human motivation is culturally bound, therefore, it can be difficult to generalize theories of motivation across cultures.

To Prepare

• Review this week’s Learning Resources on intrinsic and extrinsic motivations and Maslow’s hierarchy of needs.
• Reflect on your motives for enrolling at Walden and consider how your motives might change as you progress in your studies.  Identify intrinsic and extrinsic motivations that will keep you motivated to complete your degree.
• Review the resources on culture and motivation. Think about how culture affects motivation.
• Identify, based on Maslow’s hierarchy of needs theory, any D-needs and B-needs that could be motivating your behavior to achieve a graduate degree. Determine whether culture plays a role in your motivation to complete your degree.

By Day 4

Post a response to the following:

Describe motivational factors that led you to enroll at Walden and that keep you enrolled. Then explain how these motivational factors might change as you progress from your first days at Walden to your first or second year. Finally, identify at least one intrinsic and one extrinsic motivation that could help keep you motivated to complete your degree. Be sure to address what role culture plays in your motivation to complete your degree.

Note: Support your postings and responses with specific references to the Learning Resources and any additional sources you identify using both in-text citations and references. It is strongly recommended that you include proper APA format and citations.

 

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  In 1949 the city of Sherbrooke, Quebec, built a hospital for about $500 000. In 1987 the city restored its courthouse for about $2.4 million. A price index for nonresidential construction was 14 in 1949, 92 in 1987, and 114.5 in 2000. According to these numbers, what did the hospital cost approximately?

 

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In 1960, the average American disposed of 2.7 pounds of garbage per day, whereas in 2003 this amount was 4.3 pounds per day.a) Find a linear function “F” that calculates the amount of garbage disposed of by a person in 1960 after “x” days. Find “F (60)” and interpret the result.b) Repeat part (a) for 2003 with a linear function “g”

 

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