Three stationary point charges with charge Q₁-Q= 2Q, Q = 3Q are each at a distance d = 5 cm apart. They all lie in the x-y plane as shown in the figure. The coordinate origin (x=0, y=0) is placed on the charge Q2. a. First, determine the electric field created by the charges Q₁ and Q3 at the origin. You neglect Q₂. [2 points] b. What is the Coulomb force F exerted by the charges Q₁ and Q on Q₂? [2 points] 120 120° 120 d

Three stationary point charges with charge Q₁-Q= 2Q, Q = 3Q are each at a distance d = 5 cm apart. They all lie in the x-y plane as shown in the figure. The coordinate origin (x=0, y=0) is placed on the charge Q2. a. First, determine the electric field created by the charges Q₁ and Q3 at the origin. You neglect Q₂. [2 points] b. What is the Coulomb force F exerted by the charges Q₁ and Q on Q₂? [2 points] 120 120° 120 d