The following charges are located inside a submarine: 5.00 C, 29.00 C, 27.0 C, and 284.0 C. (a) Calculate the net electric fl ux through the hull of the submarine. (b) Is the number of electric fi eld lines leaving the submarine greater than, equal to, or less than the number entering it

The answer is 4f======since electrostatic force is given by    we let f be the electrostatic force when  r = 1 m    if we let  denote the electrostatic force when the distance is decreased so that r = 0.5m, then    we established earlier that f = kq₁q₂. therefore    the force will now be 4f.