Tsunamis are fast-moving waves often generated by underwater earthquakes. In the

Question

Tsunamis are fast-moving waves often generated by underwater earthquakes. In the deep ocean their amplitude is barely noticeable, but upon reaching shore, they can rise up to the astonishing height of a six-story building. One tsunami, generated off the Aleutian islands in Alaska, had a wavelength of 643 km and traveled a distance of 3090 km in 5.62 h. (a) What was the speed (in m/s) of the wave? For reference, the speed of a 747 jetliner is about 250 m/s. Find the wave's (b) frequency and (c) period.

Explanation / Answer

(a) Number 152.7 Units m/s (b) Number 0.00024 Units Hz (c) Number 4166.7 Units s

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