character: Dr. Emily Chen
topic: Fundamentals of Sound Waves
grade: 9
subject: Physics
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character: Albert Einstein
topic: Wave-Particle Duality in Physics
grade: 9
subject: Physics
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character: Isaac Newton
topic: Basic Principles of Wave Motion
grade: 9
subject: Physics
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character: Marie Curie
topic: Applications of Waves in Science
grade: 9
subject: Physics
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