A complete wave pattern is defined as the time it takes for a crest of a wave to reach shore and for the water that was displaced by the crest to return to its original position. The average speed of waves in deep water is about 80 m/s. So, if we assume that the fisherman is in a boat at anchor in deep water, it would take 1 second for a complete wave pattern to go past him.

A fisherman in a boat at anchor will see a complete wave pattern go past him in just under two minutes. The time it takes for one full wave to pass by is determined by the speed of the waves and the distance between the fisherman and the shore.

Credit: www.nytimes.com

## -How Long is One Complete Wave Pattern

One complete wave pattern is typically between 10 and 20 seconds long.

## Video 21 Chapter 2: Example 5

## How Much Time Does It Take a Pulse to Travel the Full Length of the String?

When you pluck a string on a guitar, for example, the vibration travels from the point of contact all the way down to the end of the string. But how long does this take?
It turns out that it takes about one-tenth of a second for a pulse to travel the full length of the string.

This is because sound waves travel at about 1,100 feet per second (340 meters per second). So, if you pluck a string that’s 10 feet (3 meters) long, it will take one-tenth of a second for the vibration to reach the end of the string.
This may not seem like a lot, but it’s actually quite fast!

To put it in perspective, it would take you about 10 seconds to walk 1,100 feet (340 meters). So in just one-tenth of a second, a sound wave can travel more than 100 times farther than you could walk in that same amount of time!

## Conclusion

How much time does it take for one complete wave pattern to go past a fisherman in a boat at anchor? Wave patterns are created by the wind as it blows across the water. The speed of the wind determines the size and shape of the waves.

When the wind dies down, the waves will eventually disappear.

Related: **How High is the Sun above the Horizon to a Fisherman in a Boat above the Diver**