Two Initially Uncharged Identical Metal Spheres Are Connected by an Insulating

Two initially uncharged identical metal spheres are connected by an insulating spring (unstretched length 0.75 m,spring constant k=35.0 N/m) .Charge +2q is placed on the first sphere and -q on the second sphere,causing the spring to contract to a length of 0.54 m.Recall that the force exerted by a spring is k $\Delta$ x,where $\Delta$ x is the change in the spring's length from its unstretched/uncompressed length.Determine the charge q.

A) 1.19 * 10^-10 C
B) 1.09 * 10^-5 C
C) 2.06 * 10^-5 C
D) 1.75 * 10^-5 C
E) 3.62 * 10^-5 C

Correct Answer:

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