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16%D Wed Jan 25 12.12 PM t View History Bookmarks People Window Help MasteringPhysics: pp06 Secure httpsilisession.masteringphysics.com/myct/temview?assignmentproblemio 736983008offset prev hy 284 Sp17 Problem 18.03 provious 1 of 4 next Problem 18.03 of the pair of charges to be -0,400 J (ake Part A How far from a 7 eo luC point charge must a 240 HC point charge bo placed in order for the electric potential energy the energy to be zero when the charges are infinitely far apart) Incorrect; Try Again: 2 attempts remaining

Explanation / Answer

potential energy of two charges q1 and q2 at a distance of d is given by

k*q1*q2/d

where k=coloumb's constant=9*10^9

so using the values for q1 ,q2 and potential energy

9*10^9*(-7.8*10^(-6))*2.4*10^(-6)/d=-0.4

==>d=0.4212 m

hence the charges should be distanced by 0.4212 m

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