You are sitting in a closed room with no windows. the only light in the room originates from two identical bare, incandescent light bulbs. one is located on the wall to your left; and the other is located on the wall to your right. bored, you look up at the ceiling and realize there is no interference pattern. why is there no interference pattern?

Cells in the nervous system have a potential difference of 70 mv across the cell membrane separating the interior of the cell from the extracellular fluid. this potential difference is maintained by ion pumps that move charged ions across the membrane. is this an emf? select the correct answer and explanation. 1)no. the ion pumps cannot separate charges; thus, they cannot create a potential difference. 2)yes. the ion pumps cannot separate charges, but they still can create a potential difference. 3)yes. the ion pumps can actively separate charge; thus, they can create a potential difference. 4)no. the ion pumps can separate charges, but they cannot create a potential difference.