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1. A horizontal 2 cm OD tube is maintained at a temperature of 27°C on its outer surface. Calculate the average heat transfer coefficient if saturated steam at 6.22 kPa is condensing on this tube.
2 .In a shell-and-tube type steam condenser, assume that there are 81 tubes arranged in a square pitch with 9 tubes per column. The tubes are made of copper with an outside diameter of 1 in. The length of the condenser is 1.5 m. The shell-side condensation occurs at saturation pressure. Water flows inside the tubes with a mass flow rate of 4 kg/s. The tube outside wall temperature is 90°C. With reasonable assumptions, perform thermal and hydraulic analysis of the condenser
In 2010, many unskilled workers in the United States earned the federal minimum wage of $7.25 per hour. By contrast, average earnings in 2010 were about $22 per hour, and certain highly skilled professionals, such as doctors and lawyers.
What do you understand by a ‘negative externality'? Consider the impacts of a negative externality on resource allocation and the policies which might be used to ‘correct' it.
Calculate correlation coefficients for the three ASVAB components.
Jim deposits $3,000 in a savings account that pays 6% interest compounded monthly. Three years later he deposits $4,000. Two years after the 4,000 deposit, he makes a final deposit of $6,000. Four years after the $6,000 deposit.
(Case Study: Falling Consumption Triggers Japan's Recession) What happened to consumption in Japan? Why did this happen? What was the impact on aggregate demand there?
Suppose that a randomly chosen person does test positive. What is the probability that this person really has the disease?
(a) How many people participate in the study (b) Calculate the Relative Frequency and enter the results in the above table. (c) Calculate the Midpoint for each class and enter the results in the above table. (d) Calculate the Cumulative Frequency and..
illustrate the market for theater tickets in the case of these two externalities. Again, label the demand curve, the social-value curve, the supply curve, the social-cost curve, the market equilibrium level of output, the efficient level of output..
You have a contractor make improvements to a business rental for a fixxed price of $64,000. With this improvement you can obtain additional rent payments of $1,200 per month. You estimate the improvements will cause extra monthly expenses
Unfortunately, the BPAs dams block the paths of migrating fish, contributing to the decline of several species. Suppose that BPA spends $100 million to make its hydroelectric dams less hazardous for migrating fish. Who will bear the cost of this p..
What kind of measures would you also recommend to take, in order to pursue that price? Would the new product with the recommended price be sustainable in the long-run?
Then, use a cyclical materials flow approach, and conduct a hypothetical life cycle assessment (LCA), pointing out at least two preventive initiatives that would reduce environmental risk.
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