A sound wave traveling through air is a classic example of a longitudinal wave.
Answer:
The metric system is a superset of SI. The metric system is based primarily on powers of 10 relating units—not only within a category of measure (such as length) but across categories.
Explanation:
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Water is a liquid and it’s molecules are far apart and move pretty freely and ice is a solid so it’s molecules are packed in tightly and they don’t move.