Enginering Electromagnetics help

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AI Thread Summary
The discussion revolves around calculating the total charge Q in a sphere with a given charge density of pv=10e^-3r uC/m^3. Participants express difficulty in integrating the charge density to find the total charge, with one user mentioning they received an incorrect large number during their calculations. The correct answer is stated to be 8.73 microCoulombs. An attachment with a sample problem is shared for reference, indicating that users are seeking clarity on the integration process. The conversation highlights the challenges faced in applying the integration to solve the electromagnetics problem.
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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.
 

Attachments

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