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# Question: a particle of charge q is fixed at point p...

###### Question details

A particle of charge q is fixed at point P, and a second particle of mass m and the same charge q is initially held a distance r1 from P. The second particle is then released. Determine its speed when it is a distance r2 from P. Let q = 2.5 μC, m = 16 mg, r1 = 0.85 mm, and r2 = 3.5 mm.

???m/s