Question

I need the answer for PART B

Problem 6 a) In the picture below, the 3 charges Q1, Q2 and Q3 are located at positions (-aO), (a 0) and (0,-d) respectively (The origin is the point halfway between Qi and Q2.) 2 Consider the special case where Q1.Q3 greater than zero and Q2-Q Select true or false for each statement True: If Q3 is released from rest, it will initially accelerate to the right False: The external work done to bring these charges to this configuration (from infinity) was positive True: The electric potential at any point along the y-axis is positive False: The electric field at the origin points solely in the positive y direction True: The work required to move Q3 from its present position to the origin is zero False: The force on Q3 due to the other two charges is zero True: The electric potential at the origin equals Q3/(4ed) (Here k- 1/(4teo) You are correct. Computer's answer now shown above Your receipt is 160-2748 b) In the previous problem, let Q,-1.60 μC.Q2-2.30 μC and Q,-4.50 μC (Note that Q1 and Q2 are different now.) The distances are a 1.20 cm and d=2.80 cm Calculate the potential energy of the charge configuration

Answer 1

Potential energy is kq1q2/r1+ kq2q3/r2+kq1q3/r3

So, 9*10¹¹*10^-6*10^-6{(1.6*2.30)/2.40*10^-3+(4.50*2.30)/k+(1.60*4.50)/k}

Where k is √a²+d²