physics

posted by .

There is a +4 microCoulombs (ìC) charge at each of 3 corners of a square (each side 58. mm long). What is the force on +10 microCoulombs (ìC) placed at the center of the square?

  • physics -

    Let the charge q1 be in left bottom corner, then clockwise q2 and q3, and q4 =10microC in the center.
    The forces F14=F34.
    The force
    F24=1/(4πε0)•(q2q4)/r2,
    where r=a/sqroot2=58mm/ 1.41=38.9 mm=0.0389 m.
    F24=(9•10^9)•(4•10^-6•10•10^-6)/(0.0389)^2=142.7N

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics

    Two adjacent corners of a square have charges q1 = +1.5 x 10-9 C and q2 = +4.0 x 10-9 C. The length of a side of the square L = 0.25 m. Find the EPE of a charge q3= -6.0 x 10-9 C placed at the 2 remaining corners.
  2. Physics

    idential point charges of 1.7e-6 C are fixed diagonally on opposite corners of a square. A third charge is then fixed at the center of the square, such that it causes the potentials at the empty corners to change signs without changing …
  3. Physics

    Two identical spheres, A and B, carry charges of +6 microcoulombs and -2 microcoulombs. If these spheres touch, what will be the resulting charge on sphere A?
  4. physics

    2 small conducting spheres are identical except that sphere x has a charge of -10 microcoulombs and sphere y has a charge of +6 microcoulombs after the spheres are brought and then separated what is the charge on each sphere in miicrocoulombs?
  5. 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, …
  6. Physics

    There are four charges, each with a magnitude of 2.65 microcoulombs. Two are positive and two are negative. The charges are fixed to the corners of a 0.408-m square, one to a corner, in such a way that the net force on any charge is …
  7. physics

    Three charges are at the corners of a rectangle with side L1 = 0.04 m and L2 = 0.015 m as shown. If q1 = 1.3 microCoulombs, q2 = 2.8 microCoulombs, and q3 = 3.3 microCoulombs, what is the magnitude of the force on q2
  8. physics

    Consider an insulating sphere with 10 microCoulombs of charge uniformly distributed through its volume. The sphere is surrounded by a conducting spherical shell that has a total charge of -3 microCoulombs. Outside the conucting shell …
  9. Physics 2

    four equal-magnitude (4uc)charges are placed at the four corners of a square that is 20cm on each side.find the electric field intensity at the center of square , if the charge are all positive.
  10. Physics

    4 charges Q1=2C, Q2=3C, Q3=3C & Q4=-4C are placed at the vertices of a square of side 10cm. find the force on 5th charge Q5=1C placed at the center of square.

More Similar Questions