what does it mean when an electromagnetic wave has low energy? it has a long wavelength. it has a high…

Brief Explanations:

The energy of an electromagnetic wave is related to its frequency and wavelength. The formula for the energy of a photon (a quantum of electromagnetic radiation) is (E = h\nu), where (h) is Planck's constant and (\nu) is the frequency. Also, the speed of light (c=\lambda\nu) (where (\lambda) is the wavelength), so (\nu=\frac{c}{\lambda}). Substituting into the energy formula gives (E = \frac{hc}{\lambda}). This shows that energy (E) is inversely proportional to wavelength (\lambda). So, a low - energy wave has a long wavelength.

Answer:

It has a LONG wavelength.