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 $750 \mathrm{km}$ and traveled a distance of $3700 \mathrm{km}$ in 5.3 h. (a) What was the speed (in $\mathrm{m} / \mathrm{s}$ ) of the wave? For reference, the speed of a 747 jetliner is about $250 \mathrm{m} / \mathrm{s} .$ Find the wave's (b) frequency and (c) period.

          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 $750 \mathrm{km}$ and traveled a distance of $3700 \mathrm{km}$ in 5.3 h. (a) What was the speed (in $\mathrm{m} / \mathrm{s}$ ) of the wave? For reference, the speed of a 747 jetliner is about $250 \mathrm{m} / \mathrm{s} .$ Find the wave's (b) frequency and (c) period.

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