character: Dr. Lee
topic: Applications of Sound Waves in Technology
grade: 9
subject: Physics
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character: Dr. Chen
topic: Ultrasound Imaging and Its Uses
grade: 9
subject: Physics
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character: Mr. Patel
topic: Acoustic Sensors in Environmental Monitoring
grade: 9
subject: Physics
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character: Ms. Gomez
topic: Sonar Technology and Its Applications in Marine Exploration
grade: 9
subject: Physics
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