are used to keep the positively charged molecule 'om falling due to the force of gravity (in the -y direction). The molecule can move on the y-axis. The mass of the molecule is m, the charge of the molecule is q, it can be treated as a point charge, and the desired stationary position is y f. D) What physical principles will you use to solve for the value of the charges +Q necessary to hold the molecule in place? E) Draw a Free Body Diagram of the molecule. Also, sketch a graph of the electric eld for points along the y-axis, Ey(y). Explain how these graphs show that it is possible to suspend the molecule using the two charges, + Q. F) Solve for (derive) an equation for E 2 Q y (y). This is the total (net, resultant) electric eld due to the Q's (not q) in the y-direction as a function of position along the y-axis. Your equation should be valid for -l 0. G) Consider an experiment where l = 0. 05 m, the mass of the molecule being studied is equal to the mass of 800 protons (m = 1. 7x 1027 kg), and the molecule is pro ton charged by removing one election (q =+ 1. 6x1019 C). If the molecule is held stationary at the pointy = 1/2 = 0. 025 m (negative meaning below y = 0), what is the value of Q? y +Q y =1 X q, m, yf +Q y = -1 Fig. c