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January 30, 2015

January 30, 2015

Posted by **John** on Monday, January 21, 2013 at 10:45pm.

(a) What is the location of the point?

(b) How far from the left charge is the point?

(c) Suppose that the left charge is -2 nC. Now where would you find a point where the electric field is zero??

(d) How far is the point measured from the left charge?

- Physics -
**Elena**, Tuesday, January 22, 2013 at 11:11amkq₁/x²=kq₂/(6-x)²

2/x²=6/(6-x)²

36-12x+x²=3x²

2x²+12x-36=0

x²+6x-18=0

x = - 3ħsqrt(9+18) =

= - 3 ħ 5.2

If q₁ >0 and q₂>0 x= 2.2 cm (to the right from the left charge (between the charges))

If q₁ <0 and q₂>0 x=-8.2 cm (to the left from the left (negative) charge)

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