character: Emily
topic: Sonar Technology and its Uses in Marine Exploration
grade: 11
subject: Physics
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character: Tommy
topic: Acoustic Waves in Sonar Systems
grade: 11
subject: Physics
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character: Jessica
topic: Applications of Sonar in Oceanography
grade: 11
subject: Physics
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character: Oliver
topic: Principles of Sound Propagation Underwater
grade: 11
subject: Physics
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