Use image for both problems what type of energy does each type of the pendulum represents a. b. c. according to the lay of conversion of mechanical energy, if the only force acting on this pendulum is gravity, the total energy of the system is

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=