How does the direction of the electric current, moving across a battery powered device, differ from the direction of travel in the ac current sent to homes and businesses?

Astudent wears sunglasses to her read a book more easily which wave interaction occurs as light passes from the air into the plastic lenses? a polarization b. refraction c. diffraction d. interference

Which two particles are found in the center of an atom

If y gets smaller as x gets bigger and y have an relationship?