Don’t understand this science Question.

Figure 10-1 study figure 10-1. the strong nuclear force felt by a single proton in a large nucleus

This flow chart shows the amount of energy that is emitted by each type of light. ultraviolet > blue light > yellow light > red light (maximum energy) (minimum energy) in an experiment, shining which type of light on a strip of metal would be least likely to produce the photoelectric effect? ultraviolet light dim blue light bright red light bright yellow light

How does kepler second law of planetary motion overthrow one of the basic beliefs of classical astronomy