Take a look at an organized physics course. The 34-section electronic textbook covers material in AP® Physics 1 and 2. Teachers use the text to supplement lectures and have the class work through the labs. Each section contains...

With sample data, equations, and practice problems, students explore the concept of wave speed.

Acting as part of an overview on quantum theory, this section of the site answers the question, what is a wave? In addition to a definition, several examples and formulas are provided.