An object is pulled northward with a force of 10 N and southward with a force of 15 N. The magnitude of the net force on the object is
A) 0 N.
B) 5 N.
C) 10 N.
D) 15 N.
E) none of the above
B
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The cap-and-trade program for regulating air pollutants by the U.S. government is an example of
a. full-cost pricing b. incentive-based regulation c. command and control regulation d. service-flow regulation e. none of these answers
Why do temperature inversions help to stabilize air?
A) they inhibit vertical motion B) they enhance vertical motion C) they can either inhibit or enhance vertical motion depending on the amount of solar radiation D) none
All of the following must be assessed when making a land use plan EXCEPT:
A. the purchase of land suitable for development. B. the geologic nature of the area. C. transportation issues. D. the cost of implementing the plan.
Materials that return to their original state upon release of pressure are classified as:
a. ideal b. elastic c. plastic d. viscous