Q. A uniform electric field of magnitude 290 V/m is directed in the negative y direction as shown in the figure below. The coordinates of point A are (-0.200, -0.300) m, and those of point B are (0.400, 0.500) m. Calculate the potential difference VB - VA, using the blue path.
Q. A 231- projectile, fired with a speed of 105 at a 57.0 angle, breaks into three pieces of equal mass at the highest point of its arc (where its velocity is horizontal). Two of the fragments move with the same speed right after the explosion as the entire projectile had just before the explosion; one of these moves vertically downward and the other horizontally. Determine the energy released in the explosion.