A 8.0 nm thick cell membrane undergoes an action potential that follows the curve in the figure.

Part A:What is the strength of the electric field inside the membrane just before the action potential?

Part B:What is the strength of the electric field inside the membrane at the peak of the depolarization?

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in a typical living cell the electric potential inside the cell is0.070 V lower than the electric potential outside the cell. thethickness of the cell membrane is 0.10 um. that are the magnitudeand direction of the electric field within the cell membrane?

question comes from Physics 2nd edition James S Walker Chapter 20Q#4.

In a typical living cell, the electric potential inside the cell is0.070 V lower than the electric
potential inside the cell. The thickness of the cell membrane is0.10 Âµm. What are the (a)
magnitude and (b) direction of the electric field within the cellmembrane?

A tiny sphere carrying a charge of -25.0 nC is moved 100 cm in auniform electric field with no
acceleration. It goes from a location at a potential of zero to apotential of + 100 V. (a) How much
work is done by the applied force? (b) What is the significance ofthe sign of ?W?

1. In the figure, which capacitor plate, left or right, is the positive plate?

2. What is the electric field strength inside the capacitor?

3. What is the potential energy of a proton at the midpoint of the capacitor?

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