I’m pretty sure the answer is D :)
Answer:D) human factors psychologists.
Explanation: with the progression of technology and how quick it is increasing into doing the work that is usually done by human beings , this has open up the role of human factors psychologist in the world of engineering. This is sort of psychologist which focuses on studying human capabilities and limitations in order to innovate safer technologies.
What Human Factors Psychologists Do?
- Human factors psychologist studies how people interact with newly innovated technology. The aim is to innovate technology that are safe and comfortable for people to interact with.
Answer:
The gravel of the sand will dissolve a part and what is not dissolved will be deposited on the bottom of the Beaker. The gravel deposited on the bottom of the Beaker will change color, presenting a darker color than normal.
Drops of sunflower seed oil, on the other hand, will accumulate in several circles, will not dissolve and will float on the water surface inside the Beaker.
Explanation:
Gravel of the sand is a polar material, which means that it mixes with the water dissolving in it. However, the payment contained in a beaker has a dissolution limit, in which case when the gravel of the sand is poured into a beaker with water, the gravel will be dissolved until it reaches the dissolution limit. When this limit is reached, the gravel of the sand that has not been dissolved will be deposited in the bottom of the beaker. The color of the gravel of the sand will also change, becoming darker.
Drops of sunflower oil are nonpolar substances, which means that they will not be dissolved in water. However, these drops will come together in several circles and will not mix in the water, but will remain floating on its surface.
Sunflower oil is less dense than water and therefore remains on the surface, while gravel of the sand is more dense than water and is therefore deposited on the bottom of the baeaker.
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