3 particles are located in the x-y plane. Particle 1 has a charge Q1=2.0uC and coordinates (0cm,0cm) particle 2 has a charge Q2=-2.0uC and coordinates (3cm,0cm) and particle 3 charge Q3=-3.0uC

and coordinates (0cm,3cm) find

a) magnitud

b) direction of the electric field at coordinates (1.5cm,1.5cm)

C)find the magnitud and d) direction of the force exerted on a fourth particle with charge Q4=3.0uC and coordinates (1.5cm,1.5cm)