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October 22, 2014

Homework Help: physics

Posted by ali-1 on Tuesday, January 25, 2011 at 5:36pm.

Suppose that the resistance between the walls of a biological cell is 3.00 x 10^9 Ω.

(a) What is the current when the potential difference between the walls is 70 mV?
____________ A

(b) If the current is composed of Na+ ions (q = +e), how many such ions flow in 0.2 s?
___________ ions

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