Question

In the diagram q1 =15.0μC and q2 = - 2.0μC are placed on the two corners of an equilateral triangle abc of base L = 3.0cm.

с L- 200

a. What is the electric potential energy (in units of J) of q1 and q2?

b. What is the electric potential (in units of 106Volts) at c due to q1 and q2?

c. Now, you bring a particle of mass m=1.5 x10-6kg and excess charge q3 = 5.0 μC from infinity and place it at c, the unoccupied corner of the triangle (see figure below). What is the value (in units of J) of the electric potential energy of q3 in the presence of q1 and q2?

42 - - - bes

d. What is the total potential energy, UT(in units of J) of the three-charge configuration?

e. Suppose you keep q1 and q2 fixed in their present position and let q3 go back home to infinity. Disregard any gravitational or frictional effects. What would be the speed of q3 when it is infinitely far away from q1 and q2?

3c V= where U3c is the potential energy of q3 calculated in part (c) m 2V. where Vc is the potential at point c calculated in

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Answer #1

Given that q=15.ouc 2=-2.ouc L=3.0 cm ใน sal-(a) :- Electric Potential Energy of 4 and In Charges is U 12 = 1 น ใน 9x109 x 42Electric Potential at ć due to Z 6x 105 volt V2 = 9x109 x (-2x156) 3x10 2 Heng, neet Elechic Potential at G. V = V + V₂ = 45От О12 + O2 + 0,1 นใน L + 9 - 9, 1 ung L L gxio с 5x15 (-2 х 5 ), (irxo“) (га). 3xio - Зхуб + (- 2Х 10 (-18 19 (5х5 ) 3xioIf Charge B is free to move and is infinitely far away from 9 cola its elecktc potential energy converted in kinetic energy

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