character: Dr. Emily Carter
topic: Basics of Sound Waves and Their Applications
grade: 9
subject: Physics
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character: Mr. James Smith
topic: Introduction to Wave Properties
grade: 9
subject: Physics
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character: Ms. Linda Johnson
topic: Understanding Frequency and Amplitude
grade: 9
subject: Physics
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character: Dr. Robert Lee
topic: Real-World Applications of Sound Technology
grade: 9
subject: Physics
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