There are three tree-harvesting methods: selective removal of individual
trees, strip cutting (a row or several rows of trees are removed), or clear
cutting (all the trees are removed). Which would be most economically
efficient? Explain your answer
What will be an ideal response?
The most economically efficient method of tree harvesting is clear cutting. Selective
removal of individual trees is the most expensive method of tree harvesting,
requiring a forester to tag individual trees for removal based on some selection
criteria. The tree must be cut down, and if the area will not accommodate heavy
equipment, the tree has to be felled by hand and removed from the site without the
assistance of large machinery. Strip cutting is less expensive than harvesting
individual trees, but roads must be cut to the strip cutting areas. If the areas to be
harvested are small and scattered, this is an expensive prospect. Clear cutting is the
least expensive because all the trees are removed at once, only a small number of
logging roads need to be cut and maintained, and heavy machinery can be used to
harvest and remove the trees rapidly from the site.
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En una viga simple, el refuerzo se coloca en _____ de la viga.
a. la parte más alta b. la mitad superior c. la mitad inferior d. la parte más baja
An international aerospace contractor has been asked by a municipal police department to estimate and analyze the life cycle costs for a proposed drone surveillance system to monitor traffic patterns and congestion within the central thoroughfares of the city. The list of items include the following general categories: R&D costs (R&D), nonrecurring investment costs (NRI), recurring investment costs (RI), scheduled and unscheduled maintenance costs (Maint), equipment usage costs (Equip), and disposal costs (Disp). The costs (in $ million units) for the 20-year life cycle have been estimated. Calculate the annual LCC at an interest rate of 7% per year.
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BASF will invest $14 million this year to upgrade its ethylene glycol processes. This chemical is used to produce polyester resins to manufacture products varying from construction materials to aircraft, and from luggage to home appliances. Equity capital costs 14.5% per year and will supply 65% of the capital funds. Debt capital costs 10% per year before taxes. The effective tax rate for BASF is 36%.
(a) Determine the amount of annual revenue after taxes that is consumed in covering the interest on the project’s initial cost. (b) If the corporation does not want to use 65% of its own funds, the financing plan may include 75% debt capital. Determine the amount of annual revenue needed to cover the interest with this plan, and explain the effect it may have on the corporation’s ability to borrow in the future.
Technician A says that some fuel systems are under pressure when the engine is not running. Technician B says that the cooling system should only be dismantled after the engine has cooled down. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B