Two particles a and b have equal mass of 2.5 g and charge of equal magnitude q but of opposite sign. Particle a is suspended from the ceiling on a thread of length 0.35 m and negligible mass. When a and b are separated by a horizontal distance of 0.25 m, a is in static equilibrium, with string at an angle of 45 degrees with the vertical. Determine q.

3. Two particles a and b have equal mass of 2.5 g and charge of equal magnitude q but of opposite sign. Particle a is suspended from the ceiling on a thread of length 0.35 m and negligible mass. When a and b are separated by a horizontal distance of 0.25 m, a is in static equilibrium, with string at an angle of 45 with the vertical. Determine q. 450 0.35 m 0.25m 0.25 m '3 b