As a stream flows downslope, if stream discharge doubles and the cross-sectional area of the channel also doubles, what happens to the average stream speed?
A) Average stream speed stays the same.
B) Average stream speed decreases.
C) Average stream speed increases.
D) Not enough information is given.
Answer: A
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The resistivity of the material of a wire is 1.76 × 10-8 ?m. If the diameter of the wire is 2 × 10-3 m and its length is 2 m, what is its resistance?
A) 112 ? B) 11.2 ? C) 1.12 ? D) 0.112 ? E) 0.0112 ?
Which of the following is true of carbonaceous chondrites?
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Describe the motion of an object that possesses kinetic energy yet undergoes no net displacement.
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Results from the Phoenix lander and Curiosity rover suggest that the positive result from the Viking Labeled Release experiment was probably due to
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