A cell membrane consists of an inner and outer wall separated by a distance of a

Question

A cell membrane consists of an inner and outer wall separated by a distance of approximately 10nm.Assume that the walls act like a parallel plate capacitor, each with a charge density of 105C/m2, and the outer wall is positively charged. Although unrealistic, assume that the space between cell walls is filled with air.

CAN YOU PLEASE ANWSER B! HOPEFULLY THE OTHER QUESTION WILL HELP YOU

What is the magnitude of the electric field between the membranes?

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Part B

What is the magnitude of the force on a Ca++ ion between the cell walls?

What is the magnitude of the force on a  ion between the cell walls?

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Part C

What is the potential difference between the cell walls?

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Part D

What is the direction of the electric field between the walls?

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Part E

If released from the inner wall, what would be the kinetic energy of a 4fC charge at the outer wall? 1fC=1015C.

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Explanation / Answer

Part B )

charge of ca++ is = 22x1.6x10^-19 C

therefore force

F = qE

E = sigma/epsilon

F = 4 x 10-13N (answer )

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