Question

If the 3e charge is at the origin and the Magnesium nucleus is 3cm from the origin in the +x direction, at what position (in centimeters) along the x-axis should an electron be placed so that it (the electron) experiences no net force? x =

Answer 1

E=kq₁/x²=kq₂/(3-x)²
3e/x²=12e/(3-x)²
9-6x+x²=4x²
3x²+6x-9=0
x²+2x-3=0
x=1 cm

Answer 2

Thank you very much

Answer 3

What is the magnitude of the net electrostatic force a Boron nucleus would experience at the point halfway between the Magnesium nucleus and the 3e charge on the y axis in N?

Answer 4

Its not ok. If x=1cm, the e- have a net force to the rigth

x=-3cm