character: Doppler Dan
topic: The Doppler Effect and How It Affects Sound Waves
grade: 9
subject: Physics
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character: Sound Wave Sam
topic: Understanding Sound Waves in Different Mediums
grade: 9
subject: Physics
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character: Wave Watcher
topic: The Properties of Waves and Their Applications
grade: 9
subject: Physics
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character: Frequency Felix
topic: Frequency, Amplitude, and Their Impact on Sound
grade: 9
subject: Physics
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