A small styrofoam ball of mass 0.120 g is placed in an electric field of 6000 N/C pointing downward. What excess charge must be placed on the ball for it to remain suspended in the field?

A) -16.0 nC
B) -18.0 nC
C) -57.2 nC
D) -125 nC
E) -196 nC


E

Physics & Space Science

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