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December 20, 2014

December 20, 2014

Posted by **Derp** on Friday, October 19, 2012 at 12:50pm.

2

4

9

16

At first, I figured the answer would be the obvious (2), but then I second-guessed myself and figured 4

- Physics -
**Anonymous**, Friday, October 19, 2012 at 1:04pmI think the answer is 4. The brightness is a function of the distance squared.

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