An ad for an above-ground pool states that it has an area of 25 m2. from the photograph in the ad you can tell that the pool is circlular. if you swim from one point at the edge of the pool to another, along a straight line, what is the longest distance d you can swim

Four point charges each having charge q are located at the corners of a square having sides of length a. find symbolic expressions for the following. (a) the total electric potential at the center of the square due to the four charges (use any variable or symbol stated above along with the following as necessary: ke.) vtotal= (b) the work required to bring a fifth charge p from infinity to the center of the square (use any variable or symbol stated above along with the following as necessary: w=