A fixed particle with charge -6.8 nC and a second fixed particle with a charge +3.6 nC are initially separated by a distance of 0.20 m. The second particle is released and it moves 0.06 m. What is the change in electric potential energy and did the second particle move toward or away from the first fixed particle?

There are few cells in the body that do not undergo mitosis: most somatic cells divide regularly, some more than others. take for example the cells that line the digestive tract. these cells must be frequently replaced because they are constantly eroded by the movement of food through the tract. what mechanism(s) is/are in place to ensure that these cells are exact copies of the mother cell