A scientist conducts an experiment aboard the International Space Station, in an environment of apparent weightlessness. The scientist places a charge of 59.0 µC on a conducting sphere with a 3.00 cm radius. A second, identical conducting sphere, initially neutral, is then attached to the first with a very light, thin, 2.10 m long conducting wire. Once the system of the spheres and wires reaches equilibrium, what is the tension in the wire? (Give your answer in N. Assume the surface distribution of charge on each sphere is uniform.)