character: Ms. Thompson
topic: The Effects of Medium on Sound and Light Waves
grade: 11
subject: Physics
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character: Mr. Johnson
topic: Wave Propagation in Different Media
grade: 11
subject: Physics
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character: Ms. Lee
topic: Refraction and Reflection of Light in Various Substances
grade: 11
subject: Physics
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character: Dr. Smith
topic: The Speed of Sound in Different Atmospheres
grade: 11
subject: Physics
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