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Two point charges q(1)= 20 muC and q(2)=...

Two point charges `q_(1)= 20 muC` and `q_(2)=25 muC` are placed at (-1, 1, 1) m and (3, 1, -2)m, with respect to a coordinate system. Find the magnitude and unit vector along electrostatic force on `q_(2)` ?

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The correct Answer is:
`0.18N.((4hati-3hatk)/(5))`
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