Q. an automobile travels 3km due north, then 5km northeast .represent this displacement graphically and determine the resultant displacement graphically.
Q. at the point of fission, a nuclear of 235U that has 92 protons is devided into two smaller spheres, each of wich has 46 protonsand a radius of 5.90*10^-15m. what is the magnitude of the repulsive force pushing these two spheres apart?