\'. C | ezto.mheducation.com/hm.tpx connect. PHYSICS Homework Chapter 17 Questic
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'. C | ezto.mheducation.com/hm.tpx connect. PHYSICS Homework Chapter 17 Questic 10.00 points 1 out of 8 attempts 3 Two point charges (+-10.5 mC and-10.5 nC) are located 7.78 cm apart. Let U-Owhen all of Ass the charges are separated by infinite distances What is the potential energy if a third point charge q - -49 nC is placed at point a? n all of Assistar cue View Hi View Q Show M 1.18 cm Questios 3.393.893.89 cm cm cm UE (select) References eBook & Resources Multipert Answer Chepter 17-Electric Potential Section: 01 Electric Potential Energy 53 PM 25/2018Explanation / Answer
potential at a,
Va = k q1 / r1 + k q2 / r2
=(9 x 10^9) [ (10.5 x 10^-9/0.0389) + (-10.5 x 10^-9/(3 x 0.0389))]
Va = 1619.5 Volt
PE = q Va = (-4.9 x 10^-9)(1619.5)
= - 7.94 x 10^-6 J
= - 7.94 uJ
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