Two small identical conducting spheres, each of weight 4 x 10^(-3)N, share an electric charge. They are suspended from the same point by silk threads 1 m long. When they reach equilibrium their centers are separated by 20 mm. What is the charge on each spheres? Please answer only of you can.​

The space within which a test north pole experiences a force magnetic poles 2. a powerful stream of electrons flowing high above the earth in the ionosphere electrojet 3. a concept to explain the directional nature of a magnetic field field lines 4. coil of wire designed to produce a magnetic field by a current passing through its windings ionosphere 5. that region above the earth's atmosphere where particles exist in an ionized state magnetic field 6. the extremities of a magnet where the field lines tend to converge or concentrate aurora borealis 7. a phenomenon that occurs in the northern latitudes; the northern lights solenoid