The seismic dampers are mechanical devices that have the purpose to dissipate the kinetic energy from the seismic waves that are penetrating the structure of a building.
They are very import since they started to be used because they are able to minimize the damage to the buildings and avoid their destruction to a certain degree, depending of course on the strength of the seismic waves.
Before they were used, an earthquake that was not very strong was able to make huge damage on the buildings, and very often to totally destroy them. Since the introduction of the seismic dampers though, the buildings are able to withstand much bigger earthquakes without being damaged, which saves millions of lives every year, and also a lot of material damage is avoided.
The correct answer is - A. Idaho.
The Columbia River is a big river and it flows through the western part of the North American continent. Its path leads it to cross through four federal states, tow of which are Canadian, and two are in the United States. The river starts its flow in Canada, in Alberta, moving in a northwestern direction. After that, it makes a sharp turn and moves in south direction while passing through British Columbia. It crosses the border between Canada and the United States, entering Washington, and after that Oregon, making multiple turns in different direction, and it ends up into the Pacific Ocean.
Answer:
The different phases of the moon are caused by the angle that sunlight is reflected of off the moon towards earth. As the moon rotates around earth the angle changes and we see different fractions of the moon. When the earth is completely between the moon and the sun there is a dark new moon, and when the moon gets to a point in its orbit where the entire surface facing the earth reflects light, then it is a full moon.
Explanation:
South East of Asia Hope it helps
