character: Mr. Lee
topic: Comparing Light Waves and Sound Waves
grade: 9
subject: Physics
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character: Ms. Smith
topic: Properties of Waves in Different Mediums
grade: 9
subject: Physics
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character: Mr. Adams
topic: Wave Frequency and Its Effects
grade: 9
subject: Physics
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character: Dr. Jane
topic: Applications of Light and Sound Waves in Technology
grade: 9
subject: Physics
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