In a sound wave in air there is a succession of
compressions (or condensations) and rarefactions.
For humans, audible sound has frequencies between 20 Hz and
In air, at 0 °C, the speed of sound is 331 m/s. At other
temperatures, it is (331 m/s)*SQRT (T/273), where T is the
absolute temperature in Kelvin.
Sound waves carry energy. The amount of energy transported
is the power P. The sound intensity is the power that passes
perpendicularly through a surface divided by the area of the
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.
The book offers a complete review of your AP course, strategies to give you the edge on test day, and plenty of practice with AP-style test questions. It includes full length practice exams modeled on the real test and all the terms and concepts you need to know.
This book includes a review of all the topics tested including vectors, kinematics, fluid mechanics, optics and nuclear physics. Additionally, the book includes two full length tests made complete with descriptive solutions, and quick study tables for Physics B formulas and equations.