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PPT
Mr. E. Science

Sound

For Students 6th - 8th Standards
Since light travels faster than sound, some people may appear bright until you hear them speak. The presentation covers what sound is, how fast it travels in various mediums, properties of sound, hearing, and the parts of the human ear.  
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eBook
Rice University

College Physics for AP® Courses

For Students 9th - Higher Ed Standards
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 multiple...