What appears to happen to the moon as it goes through the cucle

In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?

Describe the forces both attractive and repulsive that occur as two atoms move closer together.

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.