Suppose that a wave travels at 6 meters per second. if the frequency is 3 waves per second, what is the wavelength of the wave?

If element x has 99 protons how many electrons does it have

Contrast the force of gravity between these pairs of objects: 1-kg mass and a 2-kg mass that are 1 m apart; a 1-kg mass and a 2-kg mass that are 2 m apart; and two 2=kg masses that are 1 m apart. i dont understand.

Use 4 to 5 complete sentences, explain the concepts of beats and how beats are produces.