A point particle with charge q = 200 nC and mass m = 3.0106 g is released from rest at the midpoint of a parallel-plate capacitor. The capacitor has plate separation d = 3.0 mm. The negative electrode is at x = 0 and the positive electrode is at x = d. The voltage across the capcitor has been measured to be VC = 2.5 V. In this problem, ignore the weight of the particle. Give all numerical answers to two significant figures.