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LUS Halliday, Fundamentals of Physics, 100 Help System Announcements (i Unread) Part Time: 09:34 PM / Remaining: 134 min PRIN
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Answer #1

from the relation

electric potential v = kq/r

at point A

vA = kq1/d+kq2/5d

vA = (9*10^9/9.7*10^-6)(1.6*10^-19-5*10^-19/5)

vA = 0

at point B

vB = kq1/2d+kq2/2d

vB = (9*10^9/9.7*10^-6)(1.6*10^-19/2-5*1.6*10^-19/2)

vB = -2.96*10^-4 V

vA-vB = 2.96*10^-4 V

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