Consider a charge Q1 (+5.0 μC) fixed at a site with another charge Q2 (charge +3.0 μC, mass 6.0 μg ) moving in the neighboring space. If Q2 starts from rest from a point 4.0 cm from Q1, what will be its speed when it is 8.0 cm from Q1? (Note: Q1 is held fixed in its place. ) k = 9.00×109 N⋅m2/C2 3.5×10^4 m/s 1.2×10^4 m/s 2.4×10^4 m/s 4.4×10^4 m/s
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