character: Ms. Sarah Lee
topic: Sound Speed Variations in Gases and Liquids
grade: 12
subject: Physics
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character: Dr. Emily Chen
topic: Factors Affecting Sound Speed in Different Mediums
grade: 12
subject: Physics
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character: Mr. Tom Baker
topic: Comparative Analysis of Sound Propagation in Air and Water
grade: 12
subject: Physics
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character: Professor John Smith
topic: Understanding Acoustic Impedance in Gases and Liquids
grade: 12
subject: Physics
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