Consider two planets in space that gravitationally attract each other. If the masses of both planets are doubled, and the distance between them doesn't change, then the force between them is
A) one-quarter.
B) half as much.
C) twice as much.
D) four times as much.
E) none of the above
Answer: D
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a. True b. False Indicate whether the statement is true or false
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Fill in the blank(s) with correct word
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