a jumping flea accelerates att 500m/s^2 over a distance of 0.50mm st a 30 degree angle how far does this flea leap

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Explanation:

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False.

During chemical changes, atoms are rearranged and different kids of matter form. Liquids and gases are not solid, solid is a whole other phase. It cannot be a physical change, because it would have to involve a solid. An example of a physical change is ice melting. This would not be a physical change, but it would qualify as a chemical change.