Two slides have identical sizes and shapes but are made from different materials. The same object is allowed to slide down each of the slides. The object accelerates faster down the first slide than the second slide. Which statement is most likely to explain this result? Choose the correct answer.

The least penetrating form of radiation is

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up

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.