If you doubled the distance the Moon is from Earth, by what fraction does the strength of the tidal force change?
A) 2
B) 1/2
C) 1/4
D) 1/8
E) 1/16

Name: If you doubled the distance the Moon is from Earth, by what fraction does the strength of the tidal force change? A) 2 B) 1/2 C) 1/4 D) 1/8 E) 1/16
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Question

Quizplus · Accepted Answer

The tidal force is inversely proportional to the cube of the distance, so doubling the distance reduces the tidal force by a factor of 2^3, which is 1/8.

If You Doubled the Distance the Moon Is from Earth