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Two charges Q1= 4 μC and Q2= -38 μC are placed on the two corners of...

Two charges Q1= 4 μC and Q2= -38 μC are placed on the two corners of a square as shown in the figure below. If the side length of the square is a=62 mm, how much work is required to bring a third charge, Q3= -12 μC from infinitely far away to the empty bottom-right corner of the square? Please take k = 9.0 x 109 N.m2/C2 and express your answer using one decimal place in units of J or N.m. Please do not forget to type the minus sign if you got a negative value.

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