How much work is needed to assemble an atomic nucleus containing three protons (such as be) if we model it as an equilateral triangle of side 2.00×10−15m with a proton at each vertex?

3.46 x 10^(-13) Joules

Explanation:

The electrical work needed to assemble the system of three charges can be calculated by the following formula:

Where the variables are draw in teh attached image.

In an equilateral triangle:

r_12 = r_13 = r_23  = r

And all the charges are the same, therefore:

q1 = q2 = q3 = q

Replacing these values in the W formula:

Now let's evaluate this formula with

r =2.00 * 10^-15  m

q = 1.6 * 10^-19 C

the electric field is a “force field” around a charged object that illustrates the direction the electric force would push an imaginary 

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