Recent content by mmdts

Feynman Lectures are indeed great, but they're not an introductory text. They leave so many things unchecked, and lack the feel that a textbook would usually give off. If you happen to want a great physics textbook, I recommend Physics for Scientists and Engineers 6th Edition by Serway and...

The flux for a, b, c, d is the same, and the flux for e and f is zero. Thank you for helping me understand this, even though I just read your reply over 2 months late. After I read the reply, I did a little more reading and I think I understand it more clearly now.

Homework Statement Assume I want to calculate the electric flux through a spherical surface centred at point P with radius R which contains a point charge Q, that is not concentric with the spherical surface. Here, I can no longer assume that ∫∫sEdA = E.A, and I have to calculate the value of...

Note that Pappus theorem originally comes from an integral proof. With integration, each "slice" has an infinitesimally small width, a width at which you could completely disregard the physical laws of "having gaps because the slice has a uniform width". This is the difference between a...