In a certain region of space the electric potential is given by v ar2y - bxy2, where a = 5.00 v/m3 and b 8.00 v/m3. calculate the magnitude of the electric field at the point in the region that has cordinates z= 0 1.70 m, y 0.400 m, and three significant figures and include the appropriate units. express your answer e 6.57 previous answers submit correct part b calculate the direction angle of the electric field at the point in the region that has cordinates x = 1.70 m, y = 0.400 m, and express your answer in degrees vi axd ? a , measured counterclockwise from the positive x axis in the xy plane 237.1