The two distinct types of prairie chickens are _____
a. upland and lowland b. tall grass and short grass
c. gray and white
d. greater and lesser
a
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Passive residential solar water heating systems rely on municipal water pressure or ____________________ to circulate the HTF.
Fill in the blank(s) with the appropriate word(s).
Answer the following statement(s) true (T) or false (F)
A. It is very important to accurately model the pure-component vapor pressures B. The mixture fugacity coefficient of component i in the liquid phase must be equal to the mixture fugacity coefficient of component i in the vapor phase. C. Generally, the Peng-Robinson equation of state is more accurate in predicting mixture phase behavior than the van der Waals equation of state. D. The binary interaction parameter is 0 when the cross-parameter for the parameter a (a12) is simply the geometric mean of the pure-component parameters. E. None of the above are false.
A machine purchased 3 years ago for $140,000 is now too slow to satisfy the demand of customers. It can be upgraded now for $79,000 or sold to a smaller company internationally for $40,000. The upgraded machine will have an annual operating cost of $85,000 per year and a $30,000 salvage value in 3 years. If upgraded, the presently owned machine will be retained for only 3 more years, then replaced with a machine to be used in the manufacture of several other product lines. The replacement machine, which will serve the company now and for a maximum of 8 years, costs $220,000. Its salvage value will be $50,000 for years 1 through 5; $20,000 after 6 years; and $10,000 thereafter. It will have an estimated operating cost of $45,000 per year.
Your boss asks you to perform an economic analysis at 15% per year using a specified 3-year planning horizon (a) to determine if the current machine should be replaced now or 3 years from now, and (b) once decided, to determine the equivalent AW for the next 3 years. (c) Write the spreadsheet functions that determine the AW values. (d ) After you return to your office, your boss texts the following question and wants an answer immediately. What do you tell her and what is the spreadsheet function used to determine the answer? “Hi, what is the equivalent annual worth of the replacement machine if we keep it for its maximum expected life and how much does this reduce the capital recovery each year?”
Rubble stone foundations have been part of building for centuries
Indicate whether the statement is true or false