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2. A fisherman while on sail notices that he goes from the highest position to the lowest and back to the highest in 2.4 seconds. (a) What was the period of the wave? (b) What was the frequency?

3. Two boats are anchored 12.13 m apart. As a series of waves passes, the boats float up and down but when one is up, the other is always down. What wavelength wave could produce this effect?

4. A classmate of yours, 1000 m away, strikes a railroad track which you have your ear on. How long after he strikes will the sound arrive? Assuming that the speed of sound on steel is 5.00 × 103 m/s, what is its wavelength? 5. Busa girl is 8.0 m away from a source of sound. While, Tubu boy is 4.0 m from the same source. What is the ratio of sound intensity heard by Tubu boy to that of Busa girl?​

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