Thursday

April 24, 2014

April 24, 2014

Posted by **k** on Thursday, March 21, 2013 at 10:17am.

R/9

9R

R

R/3

3R

- physics -
**Elena**, Thursday, March 21, 2013 at 12:14pmR=ρL/A

R =4ρL/πd²

R₁ =4ρL/ (π4d²- πd²) =4ρL/ 3πd²

R₁=R/3

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