character: Professor Johnson
topic: Wave Behavior in Different Mediums
grade: 11
subject: Physics
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character: Dr. Emily Carter
topic: Refraction and Reflection of Waves
grade: 11
subject: Physics
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character: Ms. Sarah Lee
topic: Sound Waves in Various Environments
grade: 11
subject: Physics
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character: Mr. Alex Brown
topic: Light Waves and Their Mediums
grade: 11
subject: Physics
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