character: Mrs. Lee
topic: Applications of Sound Waves
grade: 11
subject: Physics
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character: Mr. Smith
topic: Understanding Frequency and Pitch
grade: 11
subject: Physics
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character: Dr. Evans
topic: Sound Waves in Medical Imaging
grade: 11
subject: Physics
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character: Ms. Johnson
topic: Acoustic Engineering and Sound Design
grade: 11
subject: Physics
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