Question

radio waves, microwaves, and infra - red waves are on the low energy side of the electromagnetic spectrum. do they have a short or long wavelength?
short
long

Explanation:

Step1: Recall the electromagnetic spectrum

In the electromagnetic spectrum, radio waves, microwaves, and infra - red waves are on the low energy side.

Step2: Analyze wavelength - energy relationship

According to the formula \(E = h
u=\frac{hc}{\lambda}\) (where \(E\) is energy, \(h\) is Planck's constant, \(
u\) is frequency, \(c\) is the speed of light, and \(\lambda\) is wavelength), energy \(E\) is inversely proportional to wavelength \(\lambda\).

Step3: Determine wavelength for low - energy waves

Since they are on the low energy side, from \(E=\frac{hc}{\lambda}\), when \(E\) is small, \(\lambda\) (wavelength) is large.

Answer:

LONG