If you want to use th sun bake some apples in a metal cup outside what color paper shoul wrap around your cup?

To maximize solar energy absorption for baking apples, it's best to use black paper to wrap around the metal cup.

Black is the color that absorbs the most solar energy across the visible spectrum. When you wrap black paper around the metal cup, it increases the surface area that absorbs sunlight. The black paper converts the absorbed solar energy into heat, which is transferred to the metal cup and the apples inside.

By effectively capturing and concentrating solar heat, the black paper helps to bake the apples more efficiently and quickly. In contrast, using other colors like white or silver may reflect more sunlight and reduce the heat transfer to the cup.