character: Dr. Emily Carter
topic: Properties of Sound Waves in Different Media
grade: 12
subject: Physics
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character: Professor John Smith
topic: Understanding Wave Propagation through Solids
grade: 12
subject: Physics
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character: Ms. Sarah Lee
topic: Sound Speed Variations in Gases and Liquids
grade: 12
subject: Physics
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character: Dr. Robert Johnson
topic: Acoustic Impedance and Its Effects on Sound Transmission
grade: 12
subject: Physics
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