Homework Help: physics

Posted by anybody on Sunday, February 5, 2012 at 6:11pm.

Two point charges, 4.0 湣 and -2.0 湣, are placed 5.4 cm apart on the x axis, such that the -2.0 湣 charge is at x = 0 and the 4.0 湣 charge is at x = 5.4 cm.
(a) At what point(s) along the x axis is the electric field zero? (If there is no point where E = 0 in a region, enter "0" in that box.)
x < 0 cm
(b) At what point(s) along the x axis is the potential zero? Let V = 0 at r = . (If there is no point where V = 0 in a region, enter "0" in that box.)
x < 0 cm
0 < x < 5.4 cm cm

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