Enginering Electromagnetics help

shaggyrogers

1. The problem statement, all variables and given/known data
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


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


3. The attempt at a solution

didnt know where to start

Nacer

The following should help.

Regards,

Nacer.

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 im doing either way i still cant get the right answer.

Attached Images

untitled.bmp (63.4 KB, 3 views)