It takes 15 seconds for a wave to pass a buoy 25 meters from shore. If its wavelength is 30 meters, what is its speed.
To find the speed of the wave, we can use the equation:
Speed = Distance / Time
In this case, the distance is the wavelength of the wave, which is given as 30 meters. The time is the time it takes for the wave to pass a buoy, which is given as 15 seconds.
Substituting these values into the equation, we get:
Speed = 30 meters / 15 seconds
Simplifying this calculation, we find that the speed of the wave is:
Speed = 2 meters per second