The sum of the forces that act on any object moving at constant velocity is
A. equal to its weight.
B. about half its weight.
C. 10 m/s2.
D. zero.
Answer: D
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Electrical resistance is normally measured in
A. joules. B. volts. C. amperes. D. none of the above
A chemical or biogenic sedimentary rock consisting of microscopic quartz is called
A) limestone. B) rock gypsum. C) chert. D) dolostone.
What type of fault caused the canal damage shown in the following photograph (photo courtesy USGS)? 
A. Reverse fault B. Strike-slip C. Normal fault
Which of the following best explains the relationship between driving and resisting forces with respect to plate tectonics?
A. The resisting and driving forces must be equal. B. The driving forces must exceed the resisting forces. C. The resisting forces must exceed the driving forces.