character: Dr. Sarah Johnson
topic: The Physics of Sound Waves in Medicine
grade: 9
subject: Physics
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character: Dr. Emily Carter
topic: Applications of Acoustic Waves in Diagnostics
grade: 9
subject: Physics
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character: Dr. Mark Thompson
topic: Sound Wave Propagation in Biological Tissues
grade: 9
subject: Physics
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character: Dr. Lisa Wang
topic: Ultrasound Technology in Medical Imaging
grade: 9
subject: Physics
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