Three point charges are arranged on a line. Charge q3 = +5.00nC and is at the origin. Charge q2 = -2.50 nC and is at x = 4.00 cm . Charge q1 is at x = 1.50 cm .

What is q1 (magnitude and sign) if the net force on q3 is zero?

Question

Three point charges are arranged on a line. Charge q3 = +5.00nC and is at the origin. Charge q2 = -2.50 nC and is at x = 4.00 cm . Charge q1 is at x = 1.50 cm .

What is q1 (magnitude and sign) if the net force on q3 is zero?

anonymous · Answer

$$F _{e}=k _{e}\frac{ q1q2 }{ r^2 }$$
is the formula where $$k _{e}=8.9\times10^9$$

moonlitfate · Answer

Yes, I was able to get that far. :)  I am just not sure where I messed up.  Let me see if I can post the work that I have already done...

anonymous · Answer

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