When the separation distance between a pair of stars becomes twice their usual distance the force between them
A. increases to twice as much.
B. increases to four times as much.
C. decreases by one-quarter.
D. decreases by one-half.
Answer: C
Environmental & Atmospheric Sciences
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After a rock that is thrown straight up reaches the top of its path and is starting to fall back down, its acceleration is (neglect air resistance)
A) greater than when it was at the top of its path. B) less than when it was at the top of its path. C) the same as it was at the top of its path.
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Indicate whether the statement is true or false
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Fill in the blank(s) with correct word
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