Say you are in the bottom of Happy Valley. How does the force of gravity compare to what it would be on top of Mount Nittany?
a) two times less in Happy Valley than on Mount Nittany
b) two times greater in Happy Valley than on Mount Nittany
c) slightly greater in Happy Valley than on Mount Nittany
d) exactly equal in Happy Valley and on Mount Nittany
e) slightly less in Happy Valley than on Mount Nittany
Ans: c) slightly greater in Happy Valley than on Mount Nittany
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How many neutrons are in a 
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A. 79 B. 179 C. 118 D. Some other number (specify)
The first hint of the role of asteroids in extinction of the dinosaurs came from:
A) finding the huge crater in the Yucatan. B) finding dinosaur fossils with meteorites imbedded in them. C) finding a layer of worldwide iridium enriched dust. D) finding that dinosaurs were warm-blooded and smart. E) finding that no volcanic eruptions were linked to their disappearance.
Each of two vectors, 
and 
, lies along a coordinate axis in the xy plane. Each vector has its tail at the origin, and the dot product of the two vectors is 
data-wiris-created="true" class="Wirisformula" />. Which possibility is correct? A.
and both lie along the positive x axis.B.
lies along the positive x axis. lies along the negative x axis.C.
and both lie along the positive y axis.D.
lies along the negative x axis. lies along the negative y axis.E.
lies along the positive y axis. lies along the negative y axis.