PLEASE HELP ASAP! What wave measurement represents how fast the disturbance of the wave is moving?

Apossible explanation for a set of facts that can be tested by further investigation is called

Asmall, positively charged ball is moved close to a large, positively charged ball. which describes how the small ball likely responds when it is released? it will move toward the large ball because like charges repel. it will move toward the large ball because like charges attract. it will move away from the large ball because like charges repel. it will move away from the large ball because like charges attract.

Ineed the answers for these promblems i have