character: Mr. Physics
topic: Sound Waves and Their Properties
grade: 9
subject: Physics
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character: Dr. Acoustica
topic: Effect of Medium on Sound Speed
grade: 9
subject: Physics
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character: Sound Expert Sam
topic: Understanding Sound Waves in Different Mediums
grade: 9
subject: Physics
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character: Wavelength Wendy
topic: Properties of Sound: Medium Matters
grade: 9
subject: Physics
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