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.
There a tsunami triggered by the quake reached 10km (six miles) inland in places carrying houses, buildings, boats and cars with it. In the city of Sendai the police found up to 300 bodies in a single ward. Outside the city in a built-up area a fire blazed across several kilometres.