character: Mr. Johnson
topic: Analyzing Sound Frequencies and Their Effects
grade: 11
subject: Physics
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character: Ms. Smith
topic: Wave Properties and Sound Transmission
grade: 11
subject: Physics
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character: Dr. Lee
topic: The Doppler Effect and Sound Waves
grade: 11
subject: Physics
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character: Mrs. Green
topic: Resonance and Sound Quality
grade: 11
subject: Physics
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