character: Dr. Emily Wong
topic: Understanding Sound Waves and Their Frequencies
grade: 9
subject: Physics
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character: Mr. John Adams
topic: The Basics of Wave Properties
grade: 9
subject: Physics
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character: Ms. Sarah Lee
topic: Frequency and Its Role in Sound
grade: 9
subject: Physics
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character: Professor Michael Chang
topic: Applications of Sound Waves in Technology
grade: 9
subject: Physics
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