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Two identical point charges, with charge "+q", are fixed and separated by a distance "d". A third charge
"-Q" of mass "m" can move freely and is at rest on the x-axis at the beginning in a distance of "X".
How fast will the charge "-Q" move when it's at the middle of the charges "+q", if it's released from a
distance x<<d from the midpoint?
+q
d/2
0
d/2
+q
X

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