What is the electric field at a point 4 cm from the axis of a cylindrical shell?

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Homework Help Overview

The problem involves determining the electric field at a specific distance from the axis of a cylindrical shell with a uniform surface charge density. The context includes a given electric field intensity at a different radial distance and relevant constants.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants express uncertainty about how to begin solving the problem and question the clarity of the theoretical background needed. There are suggestions to review relevant theory before attempting the problem.

Discussion Status

The discussion includes some attempts to clarify the approach to the problem, with participants reflecting on their experiences and frustrations. There is an acknowledgment of the need for a more thorough attempt before seeking help, but no consensus on a specific method has been reached.

Contextual Notes

Participants note the challenge of fatigue from previous problems, which may affect their ability to engage with the current question. There is also a mention of varying levels of politeness among forum users, which may influence the discussion dynamics.

pcml100
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Homework Statement



A cylindrical shell of radius 9.9 cm and length 286 cm has its charge density uniformly distributed on its surface. The electric field intensity at a point 23 cm radially outward from its axis (measured from the midpoint of the shell ) is 44800 N/C.
Given: ke = 8.99 × 10^9 N · m^2/C^2,

What is the electric field at a point 4 cm from
the axis?

Homework Equations



E = (Keq)/r2

The Attempt at a Solution



I kind of don't even know where to start
 
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First get hold of some good book and clarify the theory part. Then think of attempting the problem.
 
Thanks for your incredibly helpful and polite answer Einstein. I figured it out, it just confused me because I had done around 15 problems by the time I got to this one so I was exhausted. This forum has some really stuck up people if I may say so...
 
you may say so...
I didnt mean to be 'impolite'. So i do apologize!

pcml100 said:
I kind of don't even know where to start
[/b]
But next time before posting a problem, try it out at least an hour, and give a decent attempt to the solution. The mentors will help you to figure out where you have done a mistake, or where you are stuck!
 
pcml100 said:
Thanks for your incredibly helpful and polite answer Einstein. I figured it out, it just confused me because I had done around 15 problems by the time I got to this one so I was exhausted. This forum has some really stuck up people if I may say so...
However, Most people who post questions asking for help are actually polite. A few are not so polite.
 

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