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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