Answer:
The importance of categorizing a force as being either internal or external is related to the ability of that type of force to change an object's total mechanical energy when it does work upon an object. When net work is done upon an object by an external force, the total mechanical energy (KE + PE) of that object is changed.
Explanation:
in vietamnise/
Tầm quan trọng của việc phân loại một lực là bên trong hoặc bên ngoài có liên quan đến khả năng của loại lực đó để thay đổi tổng năng lượng cơ học của một vật thể khi nó hoạt động trên một vật thể. Khi công việc ròng được thực hiện trên một đối tượng bởi một ngoại lực, tổng năng lượng cơ học (KE + PE) của đối tượng đó được thay đổi.
Answer:
Because Africa is such a hot continent, lots of water gets dried up and evaporate. If we could have a better irrigation system and use rivers from around the continent, Africa could potentially start farming with the water they gain from the improved irrigation system.
Explanation:
The hurricanes have negative, often devastating effects on the Caribbean and Central America.
Explanation:
Both, the Caribbean an Central America, are located in areas where there is high hurricane activity. These two regions are not well developed, but instead they are developing, and there is large scale poverty, which unfortunately doesn't go well in a combination with the hurricanes. Every year, several hurricanes of varying sizes hit these regions, and the effects are devastating more often than not.
Because the people are poor in general, as well as the countries themselves, the infrastructure is of very bad quality. The systems for warning are either non-existent or not very efficient. When stronger hurricanes hit these two regions suffer badly as most of the infrastructure gets destroyed. The bad organization results in lot of people ending up without any help or with little to no medical assistance. Hundreds of thousands of people every year end up homeless, badly injured, or dead, and part of the reason for that is that the warning systems often don't work properly and don't notify the people on time to take cover in safer grounds.
Some of the countries that often have huge problems because of hurricanes are:
- Haiti
- Dominican Republic
- Belize
- Cuba
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