A factor used in retrospective premium calculations. It is a percentage of the standard premium and is used to provide the insurer with up-front money for administrative expenses. The Basic Premium Ratio, a percentage, is generally found in the retro manual of the plan being used. Retrospective plans, otherwise known as retros, are claim sensitive workers compensation rating programs specifically designed and used when an employer is of the size required to justify its use.
Q: In which order will seismic waves from an earthquake arrive? A. P waves, S waves, L waves B. L waves, S waves, P waves C. P waves, L waves, S waves D. S waves, P waves, L waves. A: P waves, S waves, L waves is the order of the seismic waves in which an earthquake arrives. baby_SJ01|Points 310|.
Earthquake waves travel through the Earth in all directions from the focus. The waves moving away from the point where the rocks ruptured cause rock particles to expand and contract like the slinky in the picture. This type of earthquake wave causes rocks to compress and expand as the waves move through all parts of the Earth. Recording seismic waves. Primary waves, are the first to arrive at recording stations. S waves, also produced by all earthquakes arrive a short time after at recording stations.