The charges and coordinates of two charged particles held fixed in the x-y plane are : q1=+3.0*10^-6 C ; x=3.5 , y=0.5 cm , and q2=-4.0*10^-6 C ; x=-2.0cm , y=1.5cm . Find the magnitude and direction of the force on q2 .Where you could you locate the third charge q3=+4.0*10^-6 C such the total force on q2 is zero?


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