A job is done slowly, while an identical job is done quickly. Both jobs require the same amount of work, but different amounts of
A) energy.
B) power.
C) both A and B
D) none of the above
B
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Active solar energy systems involve
A. Large volumes of massive heat absorbers B. Stationary materials to gather and hold heat C. Photovoltaic cells D. Pumps and moving fluids E. Cogeneration
Globalization of the economy has
A) leveled economic differences between places. B) heightened economic differences among places. C) decreased investment in less developed countries. D) drained resources from more developed countries. E) decreased regional specialization of production.
The aurora usually occur more frequently above Maine than above Washington State
a. True b. False
Which of the following materials makes up the largest percentage of municipal wastes?
A. garden debris B. plastics C. glass D. paper