character: Dr. Emily Martinez
topic: Ultrasound Technology in Medical Diagnosis
grade: 9
subject: Physics
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character: Dr. Sarah Johnson
topic: The Physics of Sound Waves in Medicine
grade: 9
subject: Physics
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character: Mr. David Lee
topic: Applications of Ultrasound in Non-Destructive Testing
grade: 9
subject: Physics
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character: Ms. Jessica Wong
topic: Electromagnetic Waves and Their Role in Medical Imaging
grade: 9
subject: Physics
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