Question

tibrary Genesis The Bachelor Sea -a (2) Physics web- Chapter is nome- 4. 0.22/0.66 points Previous Answers SerCP11 16.2.P015.M Two point charges Q1 +6.00 nC and Q2--1.50 nC are separated by 45.0 cm (a) What is the electric potential at a point midway between the charges? (b) What is the potential energy of the pair of charges? What is the significance of the algebraic sign of your answer? O Positive work must be done to separate the charges Negative work must be done to separate the charges. Need Help? Inn L Submit Answer Save Progress Practice Another Version The three charges in the figure below are at the vertices of an isosceles triangle. Let g - 4.50 nC and calculate the electric potential at the m 0-006 points SerCP11 16.2 P017 an isosceles triangle, di-1.00 cm and d2-8.00 cm.)

Answer 1

a)

potential at mid way

V = k ( q1 + q2) / r

V = 9*10^9* ( 6-1.5)*10^-9 / ( 0.225)

V = 180 V

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b)

potential energy of system

U = k q1 q2 /r

U = 9*10^9* 6*( - 1.5*10^-18) / 0.45

U = - 1.8*10^-7 J

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