character: Mr. Vibration
topic: The Science of Vibration and Sound Waves
grade: 9
subject: Physics
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character: Sonic Coach
topic: Understanding Sound Waves and Their Properties
grade: 9
subject: Physics
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character: Wave Master
topic: Vibrations and Their Applications in Everyday Life
grade: 9
subject: Physics
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character: Echo Explorer
topic: The Phenomenon of Sound and Its Travel through Different Mediums
grade: 9
subject: Physics
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