Society for Physics Students

Interesting apps ranging from quantum mechanics, thermodynamics and links to others.

Detailed app for quantum tunneling and wave packets.

Another detailed app for quantum bound states.

Stewart Calculus is the web site that supports a line of text books that are used in many institutions.

Here's for a single page from Stewart's site about Fourier series.

Wolfram Alpha is a multi purpose site with analytical solutions.

A site written in, a class notes format.

Classical mechanics: Here is a site with practice problems