character: Mr. Echo
topic: Understanding Sound Reflection and Transmission
grade: 10
subject: Physics
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character: Mr. Wave
topic: Properties of Waves and Sound
grade: 10
subject: Physics
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character: Dr. Frequency
topic: Amplitude and Frequency in Sound Waves
grade: 10
subject: Physics
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character: Ms. Vibration
topic: Effects of Medium on Sound Transmission
grade: 10
subject: Physics
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