BIO Signal Propagation in Neurons. Neurons are components of the nervous system of the body that transmit signals as electric impulses travel along their length. These impulses propagate when charge suddenly rushes into and then out of a part of the neuron called an axon . Measurements have shown that, during the inflow part of this cycle, approximately 5.6 × 10 11 Na + (sodium ions) per meter, each with charge + e , enter the axon. How many coulombs of charge enter a 1.5-cm length of the axon during this process?
BIO Signal Propagation in Neurons. Neurons are components of the nervous system of the body that transmit signals as electric impulses travel along their length. These impulses propagate when charge suddenly rushes into and then out of a part of the neuron called an axon . Measurements have shown that, during the inflow part of this cycle, approximately 5.6 × 10 11 Na + (sodium ions) per meter, each with charge + e , enter the axon. How many coulombs of charge enter a 1.5-cm length of the axon during this process?
BIO Signal Propagation in Neurons.Neurons are components of the nervous system of the body that transmit signals as electric impulses travel along their length. These impulses propagate when charge suddenly rushes into and then out of a part of the neuron called an axon. Measurements have shown that, during the inflow part of this cycle, approximately 5.6 × 10 11 Na+ (sodium ions) per meter, each with charge +e, enter the axon. How many coulombs of charge enter a 1.5-cm length of the axon during this process?
Write a question about the electrical action potential of the human nervous system in terms of physics.
You are working in a laboratory, using very sensitive measurement equipment. Your supervisor has explained that the equipment is also very sensitive to electrical discharge from human operators. Specification tables for the equipment indicate that an electrical discharge providing even a very small amount of energy of 250 μJ is enough to damage the equipment. Your supervisor wants to install an apparatus that will be used to remove the electrical charge from individuals’ bodies before they touch the equipment. To do this, she asks you to estimate (a) the capacitance of the human body and determine (b) the charge on the body and (c) the electric potential of the body, relative to a point infinitely far away, corresponding to the energy transfer that will damage the equipment.
Suppose a capacitor consists of two coaxial thin cylindrical conductors. The inner cylinder of radius ra has a charge of +Q, while the outer cylinder of radius rb has charge -Q.
The electric field E at a radial distance r from the central axis is given by the function:
E = ae Trao + B/r + bo
where alpha (a), beta (ß), ao and bo are constants. Find an expression for its capacitance.
First, let us derive the potential difference ab between the two conductors. The potential difference is related to the electric field by:
Vob =
- S *Edr= - ["Edr
Calculating the antiderivative or indefinite integral,
Vab = (-aage"
o-r/ao + B
+ bo
By definition, the capacitance C is related to the charge and potential difference by:
C =
Evaluating with the upper and lower limits of integration for Vab, then simplifying:
C = Q/(
(erb/ao - eralao) + ß In(
) + bo (
))
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How To Solve Any Circuit Problem With Capacitors In Series and Parallel Combinations - Physics; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=a-gPuw6JsxQ;License: Standard YouTube License, CC-BY