Show all work please I am stuck

Formulating a hypothesis: part i since the investigative question has two variables, you need to focus on each one separately. thinking only about the first part of the question, mass, what might be a hypothesis that would illustrate the relationship between mass and kinetic energy? use the format of " because when writing your hypothesis

How does changing the frequency affect the energy of the wave?

Based on the image below what would an observer on the nighttime side of earth observe?