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anonymous

  • 4 years ago

A charge of 1.82E-9 C is placed at the origin, and a charge of 4.32E-9 C is placed at x = 1.26 m. Find the position at which a third charge of 3.05E-9 C can be placed so that the net electrostatic force on it is zero. I am assuming that the charges are in a straight line. There was not an illustration with it.

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  1. anonymous
    • 4 years ago
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    yes charges are in a straight line & the third charge placed between to charges & near the smaller charge ,do you understand?

  2. TuringTest
    • 4 years ago
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    assuming all charges are positive|dw:1327621953156:dw|\[\sum F=k\frac{q_1q_2}{r_{12}^2}-k\frac{q_2q_3}{r_{23}^2}=0\]solve for r23

  3. TuringTest
    • 4 years ago
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    ...assuming you want to equalize the force on q2 that is

  4. anonymous
    • 4 years ago
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    really all charges are positive TURING

  5. TuringTest
    • 4 years ago
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    does it say so in the problem?

  6. TuringTest
    • 4 years ago
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    well they could all be negative too I guess, it wouldn't change anything as long as they have the same sign

  7. anonymous
    • 4 years ago
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    yes you are right

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