character: Mr. Thompson
topic: Wave Behavior: Reflection and Refraction
grade: 9
subject: Physics
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character: Ms. Johnson
topic: Principles of Sound Waves
grade: 9
subject: Physics
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character: Mr. Smith
topic: Light Behavior: Dispersion and Diffraction
grade: 9
subject: Physics
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character: Dr. Williams
topic: Electromagnetic Waves: Properties and Applications
grade: 9
subject: Physics
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