character: Mr. Kim
topic: Applications of Sound Waves in Technology
grade: 11
subject: Physics
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character: Professor Li
topic: Ultrasound Imaging Techniques
grade: 11
subject: Physics
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character: Dr. Green
topic: Acoustic Levitation and Its Uses
grade: 11
subject: Physics
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character: Ms. Patel
topic: Sonar Technology in Navigation
grade: 11
subject: Physics
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