The atoms of liquid mercury are A. close together, moving around one another. B. far apart, moving fast, and bouncing off the co
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To be able to solve this problem it is necessary to take into account the concepts of Electric Flow
on a closed surface.
By definition we know that the flow across a closed surface is
And we know that the Coulumb's law says
We can replace, so
Solving the integral we reach the expression,
The charge of a proton is , but we have 2 protons, then
The constant of permittivity of free space ) is
H/m
Replacing we have that the flux is
We can also calculate the Volume of a Sphere, that is
Through this value is easy now calculate the dirvegence of the electric field, which is given by,