heeelp clear answer please 21-5 with steps please Which one of these systems has

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heeelp

clear answer please

21-5

with steps please

Which one of these systems has the most negative charge? 2 electrons 3 electrons and 1 proton 5 electrons and 5 protons N electrons and N - 3 protons 1 electron Two point charges are fixed on the x-axis: q1 = 6.0 mu C is located at the origin, O, with xx = 0.0 cm, and q2 = -3.0 mu C is located at point A, with x2 = 8.0 cm. Where should a third charge, q3, be placed on the x-axis so that the total electrostatic force acting on it is zero? 19 cm 27 cm 0.0 cm 8.0 cm -19 cm Which of the following situations produces the largest net force on the charge Q?

Explanation / Answer

let the third charge be placed at x3= x cm

so KQ1/x^2=KQ2/(x-8)^2

6/x^2= 3/(x-8)^2

so 2(x^2+64-16x)=x^2

or x^2-32x+128=0

x= 27.31 cm

so answer is b= 27 cm

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