A dam is thicker at the bottom than at the top because
A) water is denser at deeper levels.
B) water pressure is greater at deeper levels.
C) water is cooler at deeper levels.
D) dams look better.
E) none of the above
Answer: B
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A creature that is scaled up in size, keeping its proportions,
A) will be stronger relative to its greater weight. B) will be weaker relative to its greater weight. C) both of these D) neither of these
State Kepler's first law
What will be an ideal response?
Two equal and opposite forces of 6.0 N act on an object. The unbalanced force on the object
a. is 6.0 N. b. is 0 N. c. is 8 N. d. is 12 N. e. cannot be determined from given information.
Rapidly expanding population effectively strangles most efforts to provide adequate
a. education. b. nutrition. c. health care. d. shelter. e. amounts of all the amenities above.