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18_InstSolManual_PDF_Part4 - 18-4 Chapter 18 18.13 Set Up...

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18.13. Set Up: For two oppositely charged parallel plates, where is the potential difference between the two plates, E is the uniform electric field between the plates and d is the separation of the plates. An electric field exerts a force on a charge placed in the field. An electron has charge and mass Solve: (a) (b) Reflect: The electric field is the same at all points between the plates (away from the edges) so the acceleration would be the same at all points between the plates as it is for a point midway between the plates. 18.14. Set Up: For two oppositely charged sheets of charge, The positively charged sheet is the one at higher potential. Solve: (a) The electric field is directed inward, toward the interior of the axon, since the outer surface of the membrane has positive charge and points away from positive charge and toward negative charge. Section 18.9 explores the effects of a material other than air between the plates.
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