Physics

posted by .

Three charges are located at the corners of a rectangle as follows:
Charge A: lower left corner, -3.0 μC
Charge B: upper left corner, -6.1 μC
Charge C: upper right corner, +2.7 μC
The distance between A and B is 0.16 m and between B and C it is 0.25 m.
How much work must an external force acting on the particles (like, your hands) do in order to move the charges infinitely far from each other?

  • Physics -

    Simple.

    The energy to do this will be equal to the PE the system has:
    PE=k(Q1*Q2)/d12 +k(Q1Q3)/d13 +kQ2Q3/d23

    And what is neat, you do this by moving only two charges, that puts all three infinitely apart.

  • Physics -

    1.49J

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    There are two +q charges and two -q charges on the corners of a square of size a. Left upper corner= +q charge, right upper corner= -q charge, left lower corner= -q charge, and right lower corner= +q charge. Compute the net force on …
  2. Physics

    On the lower left corner of a square is a fixed charge qLL = 1.5x10^-9 C and on the loser right corner is a fixed charge qLR = 4.0x10^-9 C. The square has a side length L = 0.25 meters. a) Find the electric potential energy of a third …
  3. Physics 1112 Electric charge

    As shown in the figure, a square has sides of 8.0 cm with a charge of +6.0 µC at one corner (a) and with charges of -2.0 µC at the remaining three corners (b, c, and d). The figure is just a square with no measurements. Corner a …
  4. Physics

    A rectangle has a length of 2d and a height of d. Each of the following three charges is located at a corner of the rectangle: +q1 (upper left corner), +q2 (lower right corner), and -q (lower left corner). The net electric field at …
  5. physics

    The charges and coordinates of two charged particles held fixed in an xy plane are q1 = 2.32 μC, x1 = 3.08 cm, y1 = 0.793 cm and q2 = -3.14 μC, x2 = -1.75 cm, y2 = 1.05 cm. At what (a)x and (b)y coordinates should a third particle …
  6. physics

    A rectangle has a length of 2d and a height of d. Each of the following three charges is located at a corner of the rectangle: +q1 (upper left corner), +q2 (lower right corner), and -q (lower left corner). The net electric field at …
  7. Physics Superpostion Principle

    four charged particles are placed so that each particle is at the corner of a square. the sides of the square are 15 cm. the charge at the upper left corner is +3.0 microcoulombs, the charge at the upper right corner is -6.0 microcoulombs, …
  8. Physics

    In the rectangle in the drawing, a charge is to be placed at the empty corner to make the net force on the charge at corner A point along the vertical direction. What charge (magnitude and algebraic sign) must be placed at the empty …
  9. Physics

    I don't really know where to start on the problem. Would I use V = k(q/r)?
  10. Physics

    Three charged particles are arranged on corners of a square as shown in the figure below, with charge -Q on both the particle at the upper left corner and the particle on the lower right corner, and charge +2Q on the particle at the …

More Similar Questions