character: Dr. Emily White
topic: Sound Waves and Their Properties
grade: 9
subject: Physics
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character: Isaac Newton
topic: Fundamentals of Sound Wave Propagation
grade: 9
subject: Physics
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character: Anders Celsius
topic: Temperature's Effect on Sound Speed
grade: 9
subject: Physics
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character: Hermann von Helmholtz
topic: Resonance and Sound Waves
grade: 9
subject: Physics
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