character: Professor Soundwave
topic: Introduction to Sound Waves and Their Applications
grade: 11
subject: Physics
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character: Dr. Vibration
topic: The Physics of Sound and Vibrational Energy
grade: 11
subject: Physics
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character: Ms. Echo
topic: Echoes and Their Real-World Implications
grade: 11
subject: Physics
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character: Mr. Frequency
topic: Frequency and its Role in Music and Communication
grade: 11
subject: Physics
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