The time rate of doing work is called
a. energy
b. power
c. force
d. momentum
b. power
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________ refers to the implicit cost associated with the next best alternative in a set of choices available to decision-makers.
A) Opportunity cost B) Specialization C) Resource scarcity D) None of the above
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Determine the approximate values of force in each member of the truss in Figure P13.13. Assume that the diagonals can carry either tension or compression force.
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You should never use ________ to level beams or girders
A) Bolted plates B) Metal plates C) Post caps D) Wood shims
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? The ratio of gears is a relationship between the revolutions per minute of the gear and _____.
A. ?diametral pitch B. ?pitch diameter C. ?outside diameter D. ?root diameter
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