is used acting on -2.50 C 0.200 m. harges of static 10 N? C and is 1.50 m a charge of the left of a ge of -1.60 C. what is the net e following? each of the foll (a) The charge on both spheres is doubled and the e separation distance is halved. (b) The charge on one sphere is doubled while the charge on the other sphere is tripled and the separation distance is tripled. 23. Calculate and compare the electrical and gravitational forces acting on an electron and a proton in the hydrogen atom when the distance between their centres is 5.29 10-11 m. 24. An equilateral triangle with sides of 0.200 m has three charges of -2.50 C each, situated on the vertices of the triangle. Calculate the net electrostatic force on each charge. What assumption did the calculation? you have to make to complete elds