Consider a radio wave from the transmitter of your favorite radio station, which has just reached the antenna of the radio in your room. Which of the following statements about this radio wave is CORRECT?
1. It traveled between the transmitter and your radio’s antenna at the speed of sound.
2. It reaches your radio because all of space is filled with a medium called the aether in which electromagnetic waves can vibrate.
3. The wave was originally produced by electrons that were not moving (i. e., at rest) inside the transmitter.
4. It has a frequency very close to the highest possible frequency for electromagnetic waves.
5. Its wavelength is much longer than the wavelength of the light you see reflected from this page.