character: Mr. Smith
topic: The Role of Sound Waves in Communication
grade: 10
subject: Physics
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character: Ms. Johnson
topic: The Physics of Sound Waves
grade: 10
subject: Physics
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character: Dr. Brown
topic: Wave Properties and Communication Technologies
grade: 10
subject: Physics
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character: Mrs. Davis
topic: Understanding Sound Frequency in Communication
grade: 10
subject: Physics
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