Electron Suspended Between the Surface of The Earth

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Homework Help Overview

The problem involves an electron suspended between the Earth and a fixed positive point charge, requiring the determination of the charge necessary for this equilibrium at a specified distance.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants express confusion regarding the question's requirements and seek clarification on what is being asked. There is a suggestion to consider the forces involved in achieving equilibrium, indicating a focus on the relationship between gravitational and electrostatic forces.

Discussion Status

The discussion is ongoing, with participants questioning the problem's clarity and exploring the forces at play. Some guidance has been offered regarding the formulation of equations related to the forces involved.

Contextual Notes

Participants are navigating the assumptions regarding the neutrality of the Earth and the conditions necessary for the electron's suspension. There may be missing information or specific constraints related to the problem setup.

PepeF.
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Homework Statement



An Electron remains suspended between the Earth (assumed nueutral) and a fixed positive point charge, at a distance of 6.37 m from the point charge.
Determine the charge for this to happen.
answer must be in C.

Homework Equations


g= 9.8 m/s^2
Coulomb constant = 8/98755e9 N* m^2/C^2
Kc= 8.99e9
Fe= Kc (q1*q2)/r^2

The Attempt at a Solution



I am confused with this question,. please help me out
 
Last edited:
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What's the question asking for?
 
1Kris said:
What's the question asking for?

it says

determine the charge for this to happen
 
Well think in terms of force of the condition that causes this equilibrium. Write down the equation for the two forces involved and the rest is just simple algebra (then a calculation when you stick the numbers in).
 

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