A particle carrying a \(-4.0-\mu \mathrm{C}\) charge is located at the origin of an \(x y\) coordinate system. What are the components of the electric force exerted on a particle carrying a \(+1.0-\mu \mathrm{C}\) charge if that particle is located \((a)\) at \(x=10 \mathrm{~m}, y=0\) and \((b)\) at \(x=0, y=-6.0 \mathrm{~m}\) ?