A particle with a charge of +4.0 μC has a mass of 5.0 g.What magnitude electric field directed upward will exactly balance the weight of the particle?
A) 4.1 × 104 N/C
B) 8.2 × 104 N/C
C) 4.4 × 104 N/C
D) 1.2 × 104 N/C
E) 5.1 × 104 N/C
Correct Answer:
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