The plates under the ocean squeeze really hard and they can start an earthquake.
The basic relationship between the frequency of a wave and its period is

where f is the frequency and T the period of vibration.
In our problem, the frequency is

so, by re-arranging the previous formula, we can find the period of the wave:
<span>K.E = 0.5 * m * v^2 ( m = mass(Kg), V = Velocity(m/s)
= 0.5 * 8 * 5^2
= 4 * 25
= 100 J </span>
Questions in this category that include the words "This graphic shows..."
or some such, frequently fail to include any graphic. When no graphic is
included, it must follow as the night follows the day that no physics is pictured
in the scene. Inertia is a very popular subject, often appearing in scenes
where physics is pictured. Sadly, however, in an environment that is totally
devoid of graphics, projectiles and the inertia they carry are seldom to be found.