River water held behind a dam is best described as a form of ________
A) chemical energy
B) entropy
C) thermodynamics
D) kinetic energy
E) potential energy
E
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Hydraulic fracturing involves extracting oil and gas from thin layers of which type of rock?
A)sandstone B)shale C)slate D)granite E)limestone
Suppose you were standing on a solid surface when S-waves from a nearby earthquake arrived and you could feel them. What ground motion sensation would you feel?
A. The ground would move vertically beneath you, moving you up and down. B. The ground would move both vertically and horizontally at the same time. C. The ground would move horizontally beneath you, shaking you side to side.
How many different D-aldopentoses are there?
A) 2 B) 4 C) 8 D) 16
Arsenic-74 is a positron emitter. What isotope is formed when 74As emits a positron?
A) 75Br B) 70Ga C) 74Ge D) 74Se