Please make legable. a Secure I https://session.masteringphysics.com/myct/itemVi

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Please make legable.

a Secure I https://session.masteringphysics.com/myct/itemView/assignmentProblemiD-89785664 Homework 2a Problem 16.39 (EC) Part A Three point charges of 2 0 uC, 4 0 C, and 60 C form an equilateral triangle with each side 3.8 cm Find the electric potential energy of this distribution Express your answer to two significant figures and include the appropriate units * View Available Hint(s) Hint 1 Consider charge 1 in isolation. The potential energy is zero. Now bring in charge 2 The potential energy is now, Uz How many terms like this do you have to sum when there are three charges? Hint 2. If we bring in a third charge the potential betveen charges 1 and 2 is stilil here Charge three would add the potential energy du charges The total potentiat energy now has three terms HA Submit incorrect; one attempt remaining: Try Again Not quite. Check through your calculations, you may have made a rounding error or significant Agures O Type here to search

Explanation / Answer

Ans:-

Given data:-q1 = 2C , q2 = 4C q3 = 6C equilateral triangle of length = 3.8cm

U12 = 1/40* q1q2/r12 = 9*10^9*2*10^-*6*4*10^-6/3.8*10^-2

U12= 1.89J

U23 = K*q2*q3/r23 = 9*10^9*4*10^-6*6*10^-6/3.8*10^-2

U23 = 5.68J

U31 = Kq3*q1 / r31 = 9*10^9*6*10^-6*2*10^-6/3.8*10^-2

U31 = 2.84

U = U12 + U23 + U31 = 10.41J

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