Recent content by Thomas Kieffer

I thought the angle was relative to the xy plane. Thanks for your help.

The change of coordinates I used was. I don't think I'm mixing up my convention. I also don't understand why the volume element has to be positive. ##x=rcos\phi sin\theta## ##x=rsin\phi sin\theta## ##z=rcos\theta## If you work through the integral you find ##\int_{0}^{2\pi} [-72...

Why? That's definitely not correct.

Homework Statement A sphere of radius 6 has a cylindrical hole of radius 3 drilled into it. What is the volume of the remaining solid. The Attempt at a Solution [/B] I am able to solve this using cylindrical coordinates but I'm having trouble when I try to solve it in spherical coordinates...