character: Dr. Kim
topic: Applications of Sound Waves in Technology
grade: 11
subject: Physics
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character: Professor Lee
topic: Ultrasonics in Medical Imaging
grade: 11
subject: Physics
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character: Ms. Johnson
topic: Echo Location in Animals and Its Technological Applications
grade: 11
subject: Physics
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character: Mr. Smith
topic: Acoustic Sensors in Environmental Monitoring
grade: 11
subject: Physics
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