4. Olive Oyal, a promising young physicist, has decided to recreate Millikan's famous oildrop experiment using modern materials. Rather than employing oil, Olive chooses precision glass microspheres ofdiameter 1.0 pm and density 2.5 g em'J. The gure below illustrates her experimental apparatus and three spheres A, B, and C . Olive observes that (1} before the switch is closed, all three spheres fall with the same speed Vf, and {2) after the switch is closed, sphere A rises with speed w, sphere B felts with speed w, and sphere C comes to rest. +_|_| + it"ttl 0A 013 O(' L Jr ; sun \\7 3. Based on the information given above, specify whether the charge on each of the three drops is +, , 0, or indeterminate. b. Prove that the mass of each sphere is equal to 1.3] pg. c. Now calculate the charge on each of the three spheres. From these results what might Olive conclude is the basic, elementary, unit of charge? 5. From Faraday's experiment you nd that during the electrolysis of water, 0.0] g of H2 gas is liberated by the passage of 965C of charge. Find the chargetomass ratio of a proton from these data