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The membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space. Assume that the membrane acts like a parallel plate capacitor in which the effective charge density on the inner and outer walls has a magnitude of 7.1 x 10-6 C/m2.
(a) What is the magnitude of the electric field within the cell membrane?
(b) Find the magnitude of the electric force that would be exerted on a potassium ion (K+; charge = +e) placed inside the membrane.
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You and a friend are out hiking across a large flat plain and decide to determine the height of a distant mountain peak, and alsothe horizontal distance from you to the peak. In order to do this,you stand in one spot and determine that the sightli..
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