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A long steam pipe has an outer radius of r1 that is kept at a constant temperature T1. the pip is covered with thermal insulation having an outside radius of r2. The outer ambient temperature of the surrounding air is kept constant at T_inf. Find the rate of heat teansfer from theh insulated pipe to the surrounding air. Show that for such a case, the radius of the insulation associated with the maximum energy transfer, the critical radius, can be found as k/h where k is the thermal conductivity of the insulator and h is the convection heat transfer coefficient.
Many people believe that Congress will eventually have to reduce Social Security benefits in order to reduce the budget deficit. Although most of the changes would not take place until later, assume for the purpose of this problem that Social Securit..
Bivens(2005)’s paper argues that studies that highlight the positive impacts of offshoring on the U.S economy mostly ignore the costs associated with the following: Explain each of these losses and how offshoring creates/generates these costs.
There are four phases of the business cycle, the expansion, the peak, the contraction, and the trough. The expansion is the time when real GDP is rising, the peak is when real GD reaches a maximum, the recession is when real GDP is falling, and the t..
If the MPC=0.8 and planned autonomous investment increases by $80 billion, then equilibrium real GDP will increase by
Discuss ONE strength OR ONE weakness of capitalism. Do we have any government (federal or state) policies designed to take advantage of the strengths? What are they and how do they work? Or, alternatively, do we have any government policies that atte..
Suppose that Elsa's preferences over baskets containing gasoline (good x), and food (good y), are described by the utility function U (x; y) = xy + 100y. The marginal utilities for this function are, MUx = y and MUy = x + 100: Use Px to represent the..
part 1 truefalse questions. explain your answer fully.1. the risk treatment in the bene.t-cost analysis assumes risk
Ten firms compete in a market to sell product X. The total sales of all firms selling the product are $2,500,000. Ranking the firms’ sales from highest to lowest, we find the top four firms’ sales to be $400,000, $325,000, $245,000, and $185,000, res..
Explain how do you expect the supply and demand of your selected good to change in the next year. Relate you expectations to the price and quantity of the good in the marketplace.
Research the type of backup strategy that your organization has for their data systems. Summarize your findings. Do you agree with the strategy that your organization is using? Why or why not. (a minimum of 450 words)
Billy and Bob are both 50 years old and work at the same rm. Billy is a more able individual and presently earns $90,000/year; Bob earns $50,000/year. They have the opportunity to enroll in a job-training course for a one-time cost of $10,000. What i..
How much has personal income changed the last two years? Identified any problems the government needs to address, and possible solutions?
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