Question

Part a b and c please explain ASAP

-4q +q -4q (b) Explain your answer to part (a) Score: 0 out of Cenment non-zero, and positive non-zera, and negative How did you prepare for this perticular quiz and this particular cless? Select all that apply 0 I read the suggested chapter sections. 1 watched the introductory movie for this session. 1 prepared with addtional materiel

Answer 1

Potential energy=kq1q2/r

a)There will be 3 energy terms

=kq(-4q/r)+kq(-4q/r)+k(-4q)(-4q/2r)

=zero

Clearly the summation=zero

b)Since net force on each particle is zero, no energy is required to move any particle so potential energy of system=zero

c)New potential energy

=kq(-5q/r)+kq(-5q/r)+k(-5q)(-5q/2r)

=2.5kq/r

given r=L

So new potential energy=2.5kq/L