character: Ms. Johnson
topic: Frequency, Wavelength, and The Doppler Effect
grade: 10
subject: Physics
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character: Ms. Johnson
topic: Understanding Sound Waves
grade: 10
subject: Physics
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character: Ms. Johnson
topic: Wave Properties and Applications
grade: 10
subject: Physics
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character: Ms. Johnson
topic: Introduction to The Doppler Effect in Astronomy
grade: 10
subject: Physics
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