Physics

Problem

-4.0\,\mu\text{C}

charge is fixed at the origin. A

+6.0\,\mu\text{C}

charge is at

\left(0.30\,\text{m},\,0\right)

and a

+2.0\,\mu\text{C}

charge is at

\left(0,\,0.40\,\text{m}\right)

. Determine the

x

-component of the net electrostatic force on the charge at the origin. State both magnitude and sign with units.