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A woman is sitting in a boat at anchor on a lake. Her boat bobs up and down once every 2.0·s. She notices that when the front of her 3.0·m long boat is at one wave crest, a second crest is at the middle of her boat, and a third is at the end.

What is the frequency of the waves? ____ Hz.

What is their wavelength? _____ m.

What is their speed? _____- m/s.

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