What is the wave speed of a wave that has a frequency of 250 hz and a wavelength of 0.35 m?

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.

Awave with a frequency of 500 hz is traveling at a speed of 100 m/s.what is the wavelength?

Which describes increasing the efficiency of energy resource