Enginering Electromagnetics help

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    Electromagnetics
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Discussion Overview

The discussion revolves around a homework problem related to engineering electromagnetics, specifically focusing on calculating the total charge contained within a sphere given a charge density function. Participants are exploring integration techniques and problem-solving strategies.

Discussion Character

  • Homework-related
  • Mathematical reasoning

Main Points Raised

  • The charge density is defined as pv=10e^-3r {uC/m^3}, where r is in meters.
  • Participants discuss the formula for the volume of a sphere, which is 4/3¶r^3.
  • One participant expresses difficulty in starting the integration process to find the total charge.
  • Another participant shares a link to a resource that may assist with the problem.
  • A participant mentions they have calculated a large number during integration but is unsure of the correctness of their answer.
  • One participant states that the answer they are trying to reach is 8.73 microCoulombs but is struggling to arrive at this result.
  • A participant shares an attachment of a sample problem for reference, indicating ongoing challenges in solving their specific problem.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus on the integration process or the correct answer, as multiple individuals express confusion and seek further clarification.

Contextual Notes

There are indications of missing steps in the integration process and potential misunderstandings regarding the application of the charge density formula. The discussion does not resolve these issues.

shaggyrogers
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Homework Statement


The charge density throughout a region is give by pv=10e^-3r{uC/m^3}, where r is measeure in meters. Find the total charge Q contained in a sphere center about the origin that has a radius of meters.

Where e = -1.60210X10^-19


Homework Equations


e = -1.60210X10^-19
volume of a sphere = 4/3¶r^3


The Attempt at a Solution



didnt know where to start
 
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The following should help.

Regards,

Nacer.

http://islam.moved.in/tmp/page4.jpg
 
Last edited by a moderator:
Yeah, I figured out that part i just have trouble integrating the problem. I get some huge number when I do that. But I do appreciate you showing me that but, if you could can you show me how its worked out. The answer is 8.73microCoulombs. Thanks again
 
There an attachment of a sample problem like the one I am doing either way i still can't get the right answer.
 

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