Answer:
The rule of magnetism illustrated is the field lines are more concentrated at the poles and also about the direction of magnetic field.
Explanation:
- Every magnet has two pole, north pole and south pole. The like poles repel each other and unlike poles attract each other.
- The direction of magnetic field is from north to south that can be seen by the iron filling experiment.
- When the iron fillings are kept near the bar magnet, we observe that most of the fillings are attached to either poles.
- It is due to the fact that the concentration of magnetic field is highest at the poles.
I would say D. Osteoarthritis, presbyopia
<span>Tri- in phosphate meand three. Tri- is formed from the Latin word "tres" and Greek word "treis".It is usually used in the beginning of nouns and adjectives that have three as part of their meaning.In chemistry, it means having three atoms, groups or equivalents.</span>
Binary ionic compounds are named in the pattern of metal, then nonmetal.
I hoped this helped.
