Questions
A parabolic trough concentrator with width of 3 m and length of 25 m has an...
A parabolic trough concentrator with width of 3 m and length of 25 m has an absorbed solar radiation per unit area of aperture (S) of 600 W/m2. The receiver is a cylinder with an emittance of 0.3 and is surrounded by an evaluated glass cylindrical envelope. The absorber has a diameter of 50 mm and the transparent envelope has an outer diameter of 100 mm with a thickness of 5 mm. The collector is designed to heat a fluid entering the absorber at 100oC at a flow rate of 0.0425 kg/s. The fluid has a specific heat of 3.89 kJ/kg K. The heat transfer co-efficient inside the tube is 250 W/m2 K and the overall loss co- efficient of 5 W/m2 K. The tube is made up of stainless steel with a thermal conductivity 1 of 15 W/m K and a wall thickness of 4 mm. Assume that the product of τcovαabs for the parabolic receiver is τcovαabs ~ 1.0 and the ambient temperature is 20oC. Determine the following: (a) the useful heat gain from the collector; (b) PTC collector efficiency; (c) the exit heat transfer fluid temperature; (d) the mass flow of the heat transfer fluid to achieve the same exit temperature (calculated in c) for the parabolic trough collector with a F_R value of 0.70.
In: Mechanical Engineering
Determine the (a) it's temperature, C (b) total enthalpy, KJ
A container is occupied by a ten kg waterr and four kg vapor at 0.88 Mpa.
In: Mechanical Engineering
Determine the design angle \theta (0°\leq\theta \leq90°) for strut AB so that the 400-lb horizontal force has a component of 500 lb directed from A towards C. What is the component of force acting along member AB? Take \phi = 40°.
Determine the design angle \( \theta (0°\leq\theta \leq90°) \) for strut AB so that the 400-lb horizontal force has a component of 500 lb directed from A towards C. What is the component of force acting along member AB? Take \( \phi \)= 40°.
In: Mechanical Engineering
2-4. Determine the magnitude of the resultant force acting on the bracket and its direction measured counterclockwise from the positive u axis.
2-4. Determine the magnitude of the resultant force acting on the bracket and its direction measured counterclockwise from the positive u axis.
In: Mechanical Engineering
Use MuPAD to compute the following limits.
Use MuPAD to compute the following limits.
In: Mechanical Engineering
Western Manufacturing is involved with several potential contingent liabilities
Western Manufacturing is involved with several potential contingent liabilities. Your assignment is to draft the appropriate accounting treatment for each situation described below. Western’s fiscal year-end is December 31, 2021, and the financial statements will be issued in early February 2022.
a. During 2021, Western experienced labor disputes at three of its plants. Management hopes an agreement will soon be reached. However, negotiations between the company and the unions have not produced an acceptable settlement, and employee strikes are currently under way. It is virtually certain that material costs will be incurred, but the amount of possible costs cannot be reasonably estimated.
b. Western warrants most products it sells against defects in materials and workmanship for a period of a year. Based on its experience with previous product introductions, warranty costs are expected to approximate 2% of sales. A new product introduced in 2021 had sales of $2 million, and actual warranty expenditures incurred so far on the product are $25,000. The only entry made so far relating to warranties on this new product was to debit Warranty Expense $25,000 and credit Cash $25,000.
c. Western is involved in a suit filed in January 2022 by Crump Holdings seeking $88 million, as an adjustment to the purchase price in connection with the company’s sale of its textile business in 2021. The suit alleges that Western misstated the assets and liabilities used to calculate the purchase price for the textile division. Legal counsel advises that it is reasonably possible that Western could lose up to $88 million.
Required:
In a memo, describe the appropriate means of reporting each situation and explain your reasoning.
In: Mechanical Engineering
The income statement and a schedule reconciling cash flows from operating
The income statement and a schedule reconciling cash flows from operating activities to net income are provided below for Macrosoft Corporation.
Required:
Prepare the cash flows from operating activities section of the statement of cash flows (direct method).
In: Mechanical Engineering
Shown below in T-account format are the changes affecting the retained
Shown below in T-account format are the changes affecting the retained earnings of Brenner-Jude Corporation during 2021. At January 1, 2021, the corporation had outstanding 105 million common shares, $1 par per share.
Required:
1. From the information provided by the account changes you should be able to re-create the transactions that affected Brenner-Jude’s retained earnings during 2021. Reconstruct the journal entries which can be used as spreadsheet entries in the preparation of a statement of cash flows. Also indicate any investing and financing activities you identify from this analysis that should be reported on the statement of cash flows.
2. Prepare a statement of retained earnings for Brenner-Jude for the year ended 2021.
In: Mechanical Engineering
A very helpful site to learn about individual publicly traded companies
A very helpful site to learn about individual publicly traded companies is finance.yahoo.com. Go to this website and look up a well-known publicly traded company. Once you find the company page, perform the following tasks.
Required:
1. Click on “Basic Chart.” How has the stock price changed over the past year?
2. Click on “Profile.” In what industry does the company operate?
3. Click on “Key Statistics.” What is the current ratio for the company?
4. Click on “SEC Filings.” When was the most recent 10-K, also called the annual report, submitted?
5. Click on “Competitors.” Who are the company’s primary competitors?
In: Mechanical Engineering
The surface area of a sphere of radius r is S = 4πr2. Its volume is
The surface area of a sphere of radius r is S = 4πr2. Its volume is
V = 4πr3/3.
a. Use MuPAD to find the expression for dS/dV.
b. A spherical balloon expands as air is pumped into it. What is the rate of increase in the balloon’s surface area with volume when its volume is 30 in.3?
In: Mechanical Engineering
The ink-jet printing division of Environmental Printing has grown tremendously in recent
The ink-jet printing division of Environmental Printing has grown tremendously in recent years. Assume the following transactions related to the ink-jet division occur during the year ended December 31, 2021.
Required:
Record any amounts as a result of each of these contingencies.
1. Environmental Printing is being sued for $11 million by Addamax. Plaintiff alleges that the defendants formed an unlawful joint venture and drove it out of business. The case is expected to go to trial later this year. The likelihood of payment is reasonably possible.
2. Environmental Printing is the plaintiff in an $9 million lawsuit filed against a competitor in the high-end color-printer market. Environmental Printing expects to win the case and be awarded between $6.5 and $9 million.
3. Environmental Printing recently became aware of a design flaw in one of its ink-jet printers. A product recall appears probable. Such an action would likely cost the company between $500,000 and $900,000.
In: Mechanical Engineering
Suppose you have a wire of length L. You cut a length x to make a square and use the remaining
Suppose you have a wire of length L. You cut a length x to make a square and use the remaining length L - x to make a circle. Use MuPAD to find the length x that maximizes the sum of the areas enclosed by the square and the circle.
In: Mechanical Engineering
Ship A is traveling north at 6 mi/hr, and ship B is traveling west at 12 mi/hr
Ship A is traveling north at 6 mi/hr, and ship B is traveling west at 12 mi/hr. When ship A was dead ahead of ship B, it was 6 mi away. Use MuPAD to determine how close the ships come to each other.
In: Mechanical Engineering
A certain object has a mass m $ 100 kg and is acted on by a force
A certain object has a mass m $ 100 kg and is acted on by a force f (t) = 500[2 – e-t sin(5πt)] N. The mass is at rest at t = 0. Use MuPAD to compute the object’s velocity at t = 5 s. The equation of motion is mυ̇ = f(t).
In: Mechanical Engineering
Use the Saturation block to create a Simulink model to plot the solution of the following equation for 0 ≤ t ≤ 6.
Use the Saturation block to create a Simulink model to plot the solution of the following equation for 0 ≤ t ≤ 6.
In: Mechanical Engineering