character: Ms. Johnson
topic: Frequency and Amplitude
grade: 9
subject: Physics
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character: Mr. Thompson
topic: Wave Interference Basics
grade: 9
subject: Physics
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character: Dr. Smith
topic: Understanding Amplitude in Waves
grade: 9
subject: Physics
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character: Mrs. Lee
topic: The Role of Frequency in Sound Waves
grade: 9
subject: Physics
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