character: Professor Soundwave
topic: Understanding Sound Waves and Frequency
grade: 9
subject: Physics
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character: Dr. Vibration
topic: The Physics of Sound: Frequency and Amplitude
grade: 9
subject: Physics
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character: Wave Master
topic: Exploring Wave Properties: Frequency, Wavelength, and Speed
grade: 9
subject: Physics
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character: Echo
topic: How Sound Travels: Mediums, Speed, and Frequency Dependence
grade: 9
subject: Physics
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