Part A At t = 0 a very small object with mass 0.250 mg and charge +9.00 /C is traveling at 125 m/s through the origin in the -r-direction. The charge is How far is the particle from the origin at t = 7.00 ms? moving in a uniform electric field that is in the ty- Express your answer with the appropriate units. direction and that has magnitude E = 895 N /C. The gravitational force on the particle can be neglected. HA