Enginering Electromagnetics help

[shaggyrogers]

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

 

[Nacer]

The following should help.

Regards,

Nacer.

http://islam.moved.in/tmp/page4.jpg

 

[shaggyrogers]

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

 

[shaggyrogers]

There an attachment of a sample problem like the one I am doing either way i still can't get the right answer.