expeditiupc

2022-01-11

A stationary boat in the ocean is experiencing waves from a storm. The waves move at 55 km/h and have a wavelength of 160 m. The boat is at a crest of a wave. How much time elapses until the boat is first at the trough of a wave?

Jim Hunt

Expert

The wavelength of the wave from the storm,

The speed of the wave,

The distance between a crest and the trough that is directly equal to half the wavelength of the wave.
$d=\frac{\lambda }{2}$

The expression for the speed of the wave,
$v=\frac{d}{t}$
The time taken
$t=\frac{d}{v}$
Substitute the values,

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