Physics

Problem

A small bead of mass

2.0\times10^{-5}\,\text{kg}

carries a charge of

-1.5\,\mu\text{C}

. It is held at rest on a vertical line

0.050\,\text{m}

below a fixed point charge of

+4.0\,\mu\text{C}

, then released. Ignoring air resistance, what is the magnitude of the bead’s initial acceleration? a)

1.1\times10^{5}\,\text{m/s}^2

5.4\times10^{4}\,\text{m/s}^2

1.1\times10^{6}\,\text{m/s}^2

1.1\times10^{4}\,\text{m/s}^2