Atrain is approaching you at very high speed as you stand next to the tracks. just as an observer on the train passes you, you both begin to play the same recorded version of a beethoven symphony on identical mp3 players.

according to you, whose mp3 player finishes the symphony first?
a. your player,
b. the observer's player,
c. both finish at the same time.

Select light for the type of wave, adjust the wavelength so that the light is red, and increase the amplitude of the light to the max. then, select the start button at the source location to begin producing the waves. light is a form of electromagnetic wave, containing oscillating electric and magnetic fields. the wave amplitude detector mentioned above shows how the electric field oscillates in time at the location of the probe. the amplitude of the wave at the location of the probe is equal to the maximum electric field measured. how does the amplitude of the wave depend on the distance from the source?