When an electric stove element is hot enough, it gives off a dull red glow. when it cools to the point that it no longer glows, it will.

It will have a longer wavelength

Explanation:

When an electric stove is hot and gives dull red glow. a part of the energy dissipated is emitted as visible light and part as infrared radiation in the form of heat. When the stove cools down, and no longer glows all the energy is now in the form of infrared radiation.In the electromagnetic spectrum infrared rays have a higher wavelength than visible light. Hence for the reason the radiation will have a higher wavelength since visible light is cut off.

d is the answer i came up with

c.the charges if the proton and electron and gravity