character: Mr. Johnson
topic: Fundamentals of Sound Waves
grade: 11
subject: Physics
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character: Ms. Smith
topic: Properties of Waves
grade: 11
subject: Physics
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character: Dr. Lee
topic: Physics of Sound: Frequency and Wavelength
grade: 11
subject: Physics
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character: Mr. Martinez
topic: Applications of Sound Waves in Technology
grade: 11
subject: Physics
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