Q. The metal equilateral triangle in the figure, 20 {rm cm} on each side, is halfway into a 0.10 {rm T} magnetic field.What is the magnetic flux through the triangle?
Q. Two identical conducting spheres are places with their center 0.9 cm apart. one sphere is given a charge of +1.3C and the other sphere is given a charge of -5 C. the spheres are then connected by a conducting wire. after equilibrium has occured, find the electric force between the two spheres.