2. a ball gets pushed off a 1.2m high table with a horizontal speed of 9ms. how far does the ball travel horizontally before hitting the ground?

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

Explain the comparisons between nature and packingtown that appears on pages 81 and 82 answer

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.