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Q. A harmonic wave is traveling along a rope. The oscillator that generates the wave completes 43.0 vibrations in 28.5s. A given crest of the wave travels 410cm along the rope in a time period of 11.4s. What is the wavelength?(in units of m)

Q. A plane is headed due west with an air speed of 224 m/s. The wind blows south at 15.0 m/s. Find the velocity of the plane relative to the earth.

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