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Unformatted text preview: a) R b) 2.5 R 2. (1.5 points) A permeable membrane allows 4 10 6 calcium ions per square centimeter per second to pass through it when the calcium ion concentration is kept at 8 ppm (parts per million) on one side, and very near 0 ppm on the other. If we double the thickness of the membrane, what is the ion current? Explain your reasoning in one brief sentence . transport equation for circuits: V = E - IR power dissipation in a resistor: P = I 2 R...
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- Fall '08