character: Dr. Sounderson
topic: Physics of Sound and its Applications in Medicine
grade: 9
subject: Physics
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character: Mr. Echo
topic: Sound Waves and Their Properties
grade: 9
subject: Physics
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character: Professor Frequenza
topic: Applications of Ultrasound in Medical Imaging
grade: 9
subject: Physics
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character: Dr. Harmonica
topic: The Role of Sound in Therapeutic Practices
grade: 9
subject: Physics
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