Suppose you are in Whitehorse, Yukon, and drop a bowling ball from a height of one meter into a bucket of water at 10 degrees Celsius. Then, you drop a bowling ball of the same weight, mass, and size from the same height into another bucket at negative 10 degrees Celsius. Which ball would hit the bottom of the bucket fastest?

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.