O the energy stored in an electric char arge O the energy of an electron the ene
ID: 1576483 • Letter: O
Question
O the energy stored in an electric char arge O the energy of an electron the energy stored in an electric field. Question 2 3 points Seve r Two idertical +7 nC charges are separated by a distance of 28 mm what is the electric potem/ at the mdeort et the ehage·hirts of Vets? Question 3 Three charges are positioned in a straight line, on the x-axis A44 nC charge is placed at the point x .0cm .5 nC charge is placed at the point x . 10cm A +7 nC charge is placed at the point x 15 cm What is the potential energy of this system of charges, in units of joules? Save and Submit hpExplanation / Answer
(3) The total potential energy is given by:
V = k (q1q2/r12 + q2q3/r23+ q3q1/r31)
= 9e9 (-20e-18/.1 - 35e-18/.05 + 28e-18/.15 )
= 9e9 (-2e-16 - 7e-16 + 1.87e-16 )
= - 6.417e-6 J
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