Tack of Pressure Sensitive Adhesives. Tack, or quick stick, is one of the most important properties of pressure sensitive adhesives (PSAs). The definition of tack is the property of a pressure sensitive adhesive that allows it to adhere to a surface under very slight pressure. It is determined by the ability of the adhesive to quickly wet the surface it contacts.
How far inland can a tsunami go? With wave speeds that can reach as much as 435 miles per hour, a tsunami can travel as far inland as 10 miles, depending on the slope and the shape of the shoreline that it is traveling across.
Although speeds can exceed 600 miles per hour in the deep ocean, watercraft on the surface may not be aware that they are in the midst of a tsunami, as the height from crest to trough will only be a few feet or less and the distance between wave crests may be about a hundred miles apart.