Arnold makes a chart to summarize what happens when light interacts with matter and is reflected. (found the answer)

The process in which the nucleus of an atom splits into two lighter atoms, releasing a large amount of energy is nuclear

Stars x and y are both bluish main sequence stars. star x has a higher absolute brightness than star y. how do the two stars compare? explain

1. do the particles in the medium material move in the same direction of the wave or at opposite direction to the wave? explain your answer. 2. by inputting more energy into the wave, i.e a large shake of the spring, which wave property also increases? 3. are there forces of friction acting while a wave is passing through a medium?