character: Ms. Smith
topic: The Frequency and Amplitude of Sound Waves
grade: 9
subject: Physics
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character: Mr. Johnson
topic: Understanding Wave Properties
grade: 9
subject: Physics
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character: Dr. Lee
topic: The Nature of Sound Waves
grade: 9
subject: Physics
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character: Ms. Thompson
topic: The Relationship Between Frequency and Amplitude
grade: 9
subject: Physics
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