character: Dr. Lee
topic: The Science of Sound: Understanding Waves
grade: 9
subject: Physics
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character: Mr. Thompson
topic: Wave Properties and Their Applications
grade: 9
subject: Physics
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character: Ms. Ramirez
topic: Sound Waves and Their Behavior
grade: 9
subject: Physics
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character: Prof. Johnson
topic: Introduction to Waves in Physics
grade: 9
subject: Physics
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