Recent content by rockhao

i'm assuming F= ma which leads to F = Mg but how does work into the equation so mg = E*q E = 4.9e-11 ?

1. Homework Statement A 5.0×10^−2g plastic bead is charged by the addition of 1.0×10^10 excess electrons. What electric field (strength) will cause the bead to hang suspended in the air? 2. Homework Equations 3. The Attempt at a Solution It has something to do with F = Eq but i...