Solve this proportion.
Fill in the blank(s) with the appropriate word(s).
Answer: 8
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Answer the following statement(s) true (T) or false (F)
1.Service conductors are considered outside of a house when they are installed under at least 2 inches (50 mm) of concrete beneath a house; where installed in a conduit under at least 18 inches (450 mm) of earth beneath a house; or where they are installed in rigid metal conduit (RMC) or intermediate metal conduit (IMC) when used as a service mast that extends through an eave. 2.A coupling connecting two conduits together for a service mast can be located above the last point of securement to the house. 3.Grounding electrode conductors in contact with the earth do not need to comply with the Section 300.5 rules for burial depths when being installed underground but need to be buried or otherwise protected if they are subject to physical damage. 4.If a concrete-encased electrode is used, the end of the 4 AWG copper conductor or the end of the re-bar (whichever is used) can be extended from its location in the concrete to an accessible location above the concrete. 5.A supplemental grounding electrode is a grounding electrode used to “back-up” a metal water pipe grounding electrode.
The first cost of grading and spreading gravel on a short rural road is expected to be $700,000. The road will have to be maintained at a cost of $25,000 per year. Even though the new road is not very smooth, it allows access to an area that previously could only be reached with off-road vehicles. This improved accessibility has increased the property values along the road from $400,000 to $600,000. The conventional B/C ratio at an interest rate of 6% per year for a 10-year study period is closest to: (choose one)
(a) 1.3 (b) 1.7 (c) 2.1 (d) 2.8
What are the two common types of coil corrosion?
What will be an ideal response?
Solids that float on liquids are referred to as __________.
A. foam B. buoyants C. slurry D. contaminants