A picture shows a charge A 1.00 m above the origin and has a charge of 5.00 X10^-9, it also shows a charge H 1.30 to the right of the origin and has a charge of 7.00x10^-9, it also shows a charge B 1.20 m below the origin with a charge of -6.00x10^-9. Find the magnitude and direction of the electrostatic force on charge B.