Two tiny particles having charges of +7.00 ?C and -9.00 ?C are placed along the y-axis. The +7.00-µC particle is at y = 0.00 cm,
and the other particle is at y = 40.00 cm. Where must a third charged particle be placed along the y-axis so that it does not experience any net electric force due to the other two particles?
A) 0.200 m
B) 2.99 m
C) -0.187 m
D) -2.99 m
E) 0.187 m
D
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