On the physics Module 7 test 15, why did I get 4.2x10^11 instead of 4.5x10^8.


You did not square the radius term on the bottom of the equation. The gravitational force depends on the inverse of the radius SQUARED. When you square the radius and then divide, you get 4.5x108.

Tags: Physics
Last update:
2018-03-19 14:37
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Sue
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