character: Dr. Lee
topic: Properties of Waves
grade: 11
subject: Physics
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character: Ms. Smith
topic: Sound Waves and their Properties
grade: 11
subject: Physics
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character: Mr. Johnson
topic: Light Waves: Reflection and Refraction
grade: 11
subject: Physics
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character: Dr. Kim
topic: Wave Interference and Superposition
grade: 11
subject: Physics
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