A point particle with charge q = 4.5 C is placed on the x axis at x

A point particle with charge q = 4.5 µC is placed on the x axis at x = -10 cm and a second particle of charge Q = 6.7 µC is placed on the x axis at x = +25 cm. 

(a) Determine the x and y components of the electric field due to this arrangement of charges at the point (x, y) = (10, 10) (the units here are centimeters). 

(b) Determine the magnitude and direction of the electric field at this point.