Three equal point charges, each with charge 1.40 μCμC , are placed at the vertices of an equilateral triangle whose sides are of length 0.300 mm . What is the electric potential energy UUU of the system? (Take as zero the potential energy of the three charges when they are infinitely far apart.) Use ϵ0ϵ0epsilon_0 = 8.85×10−12 C2N⋅m2C2N⋅m2 for the permittivity of free space.

U_total = 3.51 10⁻¹ J

Explanation:

The electic potential energy is

      U = ∑ k qi qj / rij

Where k is the Coulomb constant 8.988 109 N m² / C², q are the electric charges and r is the distance between them

Let's apply this equation to our case

    Total U = U₁₂ + U₁₃ + U₂₃

The distance between them is the length of the triangle L= 0.3 m, the charge are equal q = 1.40 10⁻⁶ C

       U₁₂ = k q₂ / L

All energies are equal for this case, we substitute in the total potential energy

     U_total = 3 (k q² / L)

     U_total = 6 k q² / L

We calculate

     U_total = 6 8,988 10⁹ (1.40 10⁻⁶)² / 0.3

     U_total = 3.51 10⁻¹ J

i dont think you are wrong for wanting to get even with someone who did you wrong.

(i'm an eye for an eye kind of person) but if this person hurt you in a sexual way, i dont suggest doing anything to him. he should be taken to the proper authorities, you could go to jail depending on what you do. if it was something small like your sibling took your spot on the couch, than yea, i would get even with him by taking one of his favorite snacks lol. but i dont suggest you doing anything illegal.