In which of the following does carbon dioxide serve as coolant for a graphite-moderated core?
A. gas-cooled reactor
B. pressurized-water reactor
C. heavy-water reactor
D. high-temperature gas-cooled reactor
Answer: A
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Which should be larger, the potassium atom, K, or the potassium ion, K??
A) The potassium ion, K?, is larger since charging an atom always makes it larger. B) The potassium atom, K, with an additional shell of electrons is larger. C) The potassium ion, K?, is larger since it has an extra electron which increases its size. D) The potassium atom and the potassium ion are exactly the same size and only differ in charge.
Lagoons and reefs are sites of carbonate deposition
a. True b. False
What is the relationship between transform boundaries and mid-ocean ridges?
a) Transform boundaries move segments of mid-ocean ridges. b) Transform boundaries destroy segments of mid-ocean ridges. c) Transform boundaries create segments of mid-ocean ridges. d) Transform boundaries connect segments of mid-ocean ridges.
Urban sprawl is a problem in the United States. Explain what urban sprawl is and identify the major factors that have contributed to it.
What will be an ideal response?