For each of the following diagrams determine the magnitude and direction of the net force

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

Along the line connecting the two charges, at what distance from the charge q1 is the total electric field from the two charges zero? express your answer in terms of some or all of the variables s, q1, q2 and k =14ï€ïµ0. if your answer is difficult to enter, consider simplifying it, as it can be made relatively simple with some work.

If the specific heat of a metal is 0.850 j/g °c, what is its atomic weight?