The force that attracts any two pieces of matter in the universe is the gravitational force.
<h3 /><h3>What is gravitational force?</h3>
It corresponds to the force that the earth exerts on bodies and objects, from the attractive and non-repulsive interaction between two bodies. The force of gravity determines the weight of a body, that is, its mass, and is caused by a curvature in space due to a massive body, according to Einstein's theory.
Therefore, the gravitational force was first identified by Isaac Newton, when he observed an apple falling from a tree the physicist determined gravity according to the force of the earth that pulls all objects towards the center.
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<span>The correct answer is letter D. The European unification aimed to create a common, multicultural society. </span>
The continent that had the most malnourished children in this time frame was Africa. The biggest part of the continent was in very bad economical state, civil wars and genocides were raging, lots of the existential goods were not available for the people, that contributed to big portion of the children to be malnourished, that contributed to very high percentage of death among the youngest population.
Answer:
because that is the time of year when the two most important ingredients needed for their formation
Explanation:
ingredients are warm ocean waters. hope this helps
Answer:
The required efficiency of BOD5 removal of the plant needs to be at least 91%
Explanation:
Even though a WWTP (Waste water treatment plant) has several unit operations, it needs to have an overall treatment efficiency. In this case, it is only required to know how much BOD5 do we need to lower by removing organic matter from the water. It goes as following:
This will work for any efficiency, for any parameter you need to define. They need to be in the same concentration unit, of course.
Replacing known values, we have:
Which we will approximate to 91%, because decimal percentages do not say anything and are not currently used.
