Object 1 has a mass m1 and a velocity v? 1 = (2.40m/s )x^. object 2 has a mass m2 and a velocity v? 2= (3.30m/s )y^. the total momentum of these two objects has a magnitude of 19.0kg? m/s and points in a direction 70.0? above the positive x axis. find m1 and m2

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.