A(n) ____________________ force is developed between two soft iron vanes that are affected by the same magnetic field.
Fill in the blank(s) with the appropriate word(s).
repulsion
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Concrete reinforcing bars come in limited lengths. Explain how we ensure their continuity in a long structural element, such as a column in a high-rise building or a long, continuous beam.
What will be an ideal response?
____ bearings are the most popular because they provide the greatest amount of friction reduction and can handle axial and radial loads.
A. Tapered B. Ball C. Needle D. Roller
What drain-cleaning device would be a good choice for a contractor who wants a low-cost device for only occasional use?
What will be an ideal response?
A small circle on the output of a logic gate is used to represent the:
A) Comparator operation. B) AND operation. C) OR operation. D) NOT operation.