Answer:
Ideal body fat percentage for men
Category Percentage
Essential fat 2-5%
Athletes 6-13%
Fitness 14-17%
Acceptable 18-24%
Explanation:
The molecules of the cold element are going to be closer together and still than the molecules of the hot element because the heat energy causes the molecules to be stimulated and to move.
<h3>How do molecules act at different temperatures?
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In the image you can see the behavior of the molecules when they are in different environments. On the right you see the cold molecules and on the left the hot molecules that are characterized by the following characteristics:
Cold molecules:
- Molecules together.
- Molecules with little movement.
Hot molecules:
- Separate molecules.
- Molecules with active movement.
A simple example to understand this behavior of molecules is water because:
- When water is frozen its molecules are almost static and close together.
- When the water is liquid and it is heated, the molecules move and that is why the water has bubbles, its molecules are separated.
Learn more about molecules in: brainly.com/question/19922822
It differs because a steam turbine runs off of a magnetic field and a steam engine runs off of coal
hope this helps :)
Answer:
Both sample A and B are mixtures .
Explanation:
Sample A
The given sample has density of .77 g / ml and a component of sample that is separated from vaporization has different density of 1.04 g / mL . From this density it appears that it is water . So sample a appears to be a mixture of water and another matter having lesser density and it is water soluble .
Sample B
It is also a mixture . One component is soluble in water and the other black component is not soluble in water . The soluble component gets dissolved in water and get separated and filtered out . The insoluble part remains stuck to filter paper .
Answer:
this is what i know
Explanation:
Blood vessels have the ability to dilate and constrict to control body temperatre. When body temperature is too low, the tiny blood vessels near the surface of the skin (capillaries) constrict (vasoconscriction). This decreases the blood flow near the surface of the skin so less heat is lost through radiation.
