character: Mr. John Smith
topic: Transmission of Sound in Different Mediums
grade: 9
subject: Physics
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character: Ms. Jane Doe
topic: Exploring Wave Properties in Various Materials
grade: 9
subject: Physics
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character: Dr. Emily White
topic: How Sound Travels: A Comparison of Solids, Liquids, and Gases
grade: 9
subject: Physics
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character: Mr. Alex Brown
topic: Understanding the Speed of Sound in Different Environments
grade: 9
subject: Physics
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