Question

At what distance (in m) is the electrostatic force between two electrons equal to the weight of one?

Answer 1

Answer:

Explanation:

Given

Electrostatic force between two electrons is equal to weight of one electron

i.e.

$\frac{kq_1q_2}{r^2}=m_e\cdot g$

where $q_1,q_2$ are the charge of particles

$m_e=$mass of electron

r=distance between them

$\frac{9\times 10^{9}\times 1.6\times 10^{-19}\times 1.6\times 10^{-19}}{r^2}=9.11\times 10^{-31}\times 9.8$

$r=5.08\ m$