show the steps and formulas used please. An earthquake that occurs beneath the o
ID: 2068171 • Letter: S
Question
show the steps and formulas used please.An earthquake that occurs beneath the ocean can create a giant wave called a tsunami. a very large tsunami occured recently in the Indian Ocean. Typical tsunamis have very long wavelengths in the open ocean, about 200.0 km (about 125 miles). they are almost undetectable in the open ocean as well, since their amplitudes range from only a few centimeters to one meter.
a. tsunamis travel very fast. a typical speed for a tsunami is 700.0 km/h. what is the period(in minutes) for a tsunami with this speed? the frequency (in Hz)?
b. tsunamis also arent just one large wave pulse that crashes on a shore. They are usually made up of a wave train several wavelengths long. What would be the time between two successive wave crests reaching shore?
Explanation / Answer
a)--1)700/60 = 11.66 Km/min -----2) frequency = speed / wavelength= 700 / 200 per hour =3.5 per hour= 9.72x10^-4 hz b)waves come at the shore at the end of each time period. the time period = 1/frequency = 1028 sec
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