character: Prof. Adams
topic: The Role of Ultrasound in Biological Research
grade: 11
subject: Physics
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character: Dr. Smith
topic: Applications of Ultrasonography in Medicine
grade: 11
subject: Physics
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character: Ms. Johnson
topic: Physics Behind Ultrasound Technology
grade: 11
subject: Physics
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character: Dr. Lee
topic: Using Ultrasound for Non-Destructive Testing
grade: 11
subject: Physics
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