A thin, nonconducting spherical shell of radius \(R\) carries a uniform positive charge \(+Q\). A small hole is drilled through the shell wall. A point particle of mass \(m\) and negative charge \(-q\) (where \(q > 0\)) is released from rest at a radial distance \(r = 3R\) from the center of the shell. Assuming gravitational effects and the hole's effect on the electric field are negligible, what is the speed of the particle as it passes through the center of the shell?