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.
It is a false statement that the early mapmaking techniques of the explorers had greater accuracy than methods used today
<h3>How did early cartographers make maps?</h3>
The Maps of the ancient world was by the explorers by using an accurate surveying techniques which measures the positions of various objects by calculating the distance and angles between each point.
However, it is false that the early mapmaking techniques of the explorers had greater accuracy than methods used today.
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Answer:
groups of items that compared but cannot be practically compared.
Explanation:
- The case belongs to the idioms and refers to the apparent distinction between the to incomparable items.
- As the shot and the long and the big and the smaller are both practically incomparable and have distinctions though both belong to the same category of the items as fruits.
Answer:
Bangladesh is a country that is flood prone and has ground water contamination.
Explanation:
The ground water contamination is serious threats to the water reserves of bangladesh and is a major public problem. The arsenic contamination wa first identified in the north district of bangladesh since 1993.
- Some recommendations for prevention and conservation of groundwater in Bangladesh.
- Providing safe and hygienic drinking water options
- Involving local government
- Providing proper management of patient thright proper follow up methods.
- Regular monitoring of arsenic
- Encouraging research on groundwater contamination and issuing recommendations of toxicity and management.
When dry sand and water are both exposed to equal amounts of light, you will find that water is cooler than sand.
This is because the amount of heat needed to heat the water is less than that needed to heat sand, thus, sand heats faster.
