character: Ms. Johnson
topic: Sound Waves and Their Characteristics
grade: 11
subject: Physics
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character: Mr. Smith
topic: Frequency and Amplitude of Sound Waves
grade: 11
subject: Physics
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character: Dr. Lee
topic: Applications of Sound Waves in Medicine
grade: 11
subject: Physics
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character: Ms. Patel
topic: The Doppler Effect and Sound Waves
grade: 11
subject: Physics
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