Explain how climbing a mountain is similar to hiking from the equator to one of the poles

The solar panels used by mark function because of the photoelectric effect. light shines on the cells causing electrons to be ejected from the metal, which produces an electric current. at night on mars, no light will fall on the solar cells and no electric current will be generated. according to your notes, what type of light is typically needed to cause the photoelectric effect? a)visible b)ultraviolet c)infrared

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?

What type of force holds atoms together in a crystal?