Q.2. A charged particle (q= -4 nC) is fixed in position as shown in the figure. Another particle of mass m and charge q = +9 nC is attached to a string. A horizontal electric field E = 1500 N/C is applied such that the mass m is in equilibrium when the angle 0 = 35. Find m. " qi ^^^^ 6. If a = 60 cm, b = 80cm, Q = -6.0nC and q = +4nC, What is the magnitude of the electric field at point p ? a) 35 N/C b) 42 N/C c) 52 N/C d) 64 N/C a a 7. If a = 60 cm, b = 80cm, Q = -6.0nC, and q = +3nC, What is the magnitude of the electric field at point p.2 Q a) 71 N/C b) 56 N/C c) 60 N/C d) 53 N/C a b b P P