1. Three fixed charges are arrayed in the shape of a right triangle, as shown below, where a = 4.0cm, b = 3.0 cm, and c = 5.0 cm. The magnitude of charge q, is 3.55 pC, but the sign of the charge is not known (Le., It could either be positive or negative). The magnitude and sign of q2 are both unknown; the value of q3 Is +5.05 pC. The net force F on q; is entirely in the negative x-direction. C (a) What are the signs of the charges q, and q2? Hint: consider which combination of signs for q, and q2 can produce the force F on q3. Only one combination will work! (b) Calculate the magnitude of q2. (c) Determine the magnitude of F