Consider a 400 mm × 400 mm window in an aircraft. for a temperature difference of 90°c from the inner to the outer surface of the window, calculate the heat loss rate through l = 12-mm-thick polycarbonate, soda lime glass, and aerogel windows, respectively. the thermal conductivities of the aerogel and polycarbonate are kag = 0.014 w/m · k and kpc = 0.21 w/m · k, respectively. evaluate the thermal conductivity of the soda lime glass at 300 k. if the aircraft has 130 windows and the cost to heat the cabin air is $1/kw · h, compare the costs associated with the heat loss through the windows for an 8-hour intercontinental flight.

Braverman company has two manufacturing departments—finishing and fabrication. the predetermined overhead rates in finishing and fabrication are $18.00 per direct labor-hour and 110% of direct materials cost, respectively. the company’s direct labor wage rate is $16.00 per hour. the following information pertains to job 700: finishing fabrication direct materials $ 410 $ 60 direct labor $ 128 $ 48 required: 1. what is the total manufacturing cost assigned to job 700? 2. if job 700 consists of 15 units, what is the unit product cost for this job?

Problem 9-5. net present value and taxes [lo 1, 2] penguin productions is evaluating a film project. the president of penguin estimates that the film will cost $20,000,000 to produce. in its first year, the film is expected to generate $16,500,000 in net revenue, after which the film will be released to video. video is expected to generate $10,000,000 in net revenue in its first year, $2,500,000 in its second year, and $1,000,000 in its third year. for tax purposes, amortization of the cost of the film will be $12,000,000 in year 1 and $8,000,000 in year 2. the company’s tax rate is 35 percent, and the company requires a 12 percent rate of return on its films. required what is the net present value of the film project? to simplify, assume that all outlays to produce the film occur at time 0. should the company produce the film?

Employees at a library check out books to patrons. books have an isbn and a name. the library sometimes has multiple copies of the same book. books have one or more authors. a patron is an individual who has an active (non-expired) library card. for each library card, we store the person's first and last names and their address. for each employee, we store their employee id, current salary, first and last name and their address. we also store the employee id of their current manager. each time we check out a book to a patron we need to store the date of the transaction, the employee who checked out the book to the patron, and the library card of the patron. some employees have library cards. if an employee patron turns in a book late, the fine that they pay is a percentage of their salary. some employees are authors who have library cards—they are allowed to check out as many books as they like.