Question

#2 please

In this part, we will explore electrostatics as it relates to the nerve cell, a critical electrostatic device for almost all life. We will use a rather simplified picture of the nerve cell, and treat it as a parallel plate capacitor. Although oversimplified, this model does correctly describe the underlying physics. As shown in the diagram below, the nerve cell is a fluid-filled tube (the axon) that is surrounded by another fluid. The nerve cell wall (membrane) separates the axon and the outside fluid. Both the fluid filling the axon and the outside fluid contain ions (electrically charged atoms) of sodium (Na), potassium (K), and chlorine (CI). Each Na or K ion has the charge of one proton (+e) while each Cl ion has the charge of one electron (-e). The membrane is a barrier, and ions can pass through this barrier or attach to it. When the nerve cell is in its resting state, the outside of the membrane has more Kions attached to it than Clions. The inside wall of the membrane has more Clions than Kions. Other than the ions attached to the membrane, the bulk of both fluids, and the membrane itself, can be considered as electrically neutral. * * * * * * * * * * * * * * * * * * * * * * * Membrane aaaaaaaaaaaaaaaaaaaaaaa Axon a aa aa aa aa aa aa aa aa aa aa aa 0 KKK KK 0 KKKKKKKKKKKKK 0 0 0 0 0 0 0 O O O Outside Fluid 0 0 o D The membrane thickness is about d nm thick, the axon is a cylinder with a diameter of about 10 jum, and a small axon might be L = 1 cm long (The diagram is not at all to scale)

Answer 1

... Outside of Membrane a more k dons thara 4 FR c ons... ... Inside wall of Membranes more cl Jons tham kuoms........ Outside has more net positive Charge and side in net negative n kt positive Charge d a negative na Notes

SAT 2 E. : Greside is at lower potential Magnitude of electue field a = 80x10 3 W/m lax 105 mm 2 lo myym. Direction is .p from positive to negative Charge. SUN