Technology asks the question "____"?
A. How
B. When
C. Why
D. What
Answer: A
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You have a conveyer that reaches 18 feet high and is 24 feet from the base of the grain bin (Figure 3-1).
a. What is the slope of the conveyer?
b. What angle does the conveyer make with the ground?
A company that makes micro motion compact Coriolis meters purchased a new packaging system for $600,000. The estimated salvage value was $28,000 after 10 years. Currently the expected remaining life is 7 years with an AOC of $27,000 per year and an estimated salvage value of $40,000. The company is considering early replacement of the system with one that costs $370,000, has a 12-year economic service life, a $22,000 salvage value, and an estimated AOC of $50,000 per year. The MARR for the corporation is 12% per year. (a) Determine the minimum trade-in value necessary now to make the replacement economically advantageous. (b) Write the spreadsheet functions necessary to determine RV using Goal Seek.
What will be an ideal response?
Plants that are efficient at taking iron up from a calcareous soil are known to employ which of the following methods?
A) produce organic compounds that can form stable chelates with iron B) produce reducing agents that reduce Fe3+ to Fe2+ in the rhizosphere C) lower pH of their rhizosphere D) all of the above E) none of the above
Which of the following statements describe the capability of an open-loop system?
A. It causes the process to change when the set point is varied. B. It cannot make adjustments if a disturbance is encountered. C. It provides automatic control for some types of systems. D. All of the above.