(4) What similar experience do you have which could also be compared to a defibrillator?Activity 3: QUALITATIVE PROBLEMS Direction: Solve the following problems as directed. You may show your solution on a separate sheet of paper (1) Two spheres of equal mass and equal charge are separated at a distance r. (a) Derive an expression for the quantity of charge that must be on each sphere so that the spheres are in an equilibrium where attractive and repulsive forces are balanced (b) How would doubling the distance between spheres affect the expression for the value of q from the previous problem, Explain. (2) How would you draw the electric field lines given the test charges below: (3) Coulomb's law and Newton's law of gravitation are similar in structure. Can Gauss's law be applied to gravitational fields? If so, what changes are needed