select the true statements. radio waves have ...
select the true statements. radio waves have higher frequencies than yellow light waves. green light waves have longer wavelengths than ultraviolet light. all electromagnetic waves travel at the speed of light. the longer the wavelength of an electromagnetic wave, the greater its energy.
Answer
# Brief Explanations:
1. Radio waves have lower frequencies than visible - light (including yellow light) as they are on the lower - frequency end of the electromagnetic spectrum.
2. Green light is in the visible light range and has a longer wavelength than ultraviolet light which has a shorter wavelength and higher energy in the electromagnetic spectrum.
3. All electromagnetic waves in a vacuum travel at the speed of light ($c = 3\times10^{8}\ m/s$).
4. The energy of an electromagnetic wave is inversely proportional to its wavelength ($E=\frac{hc}{\lambda}$), so the longer the wavelength, the lower the energy.
# Answer:
Green light waves have longer wavelengths than ultraviolet light.
All electromagnetic waves travel at the speed of light.