Question 1 In a modied Millikan apparatus, a small charged object with a mass of 4.7 X 1015 kg is suspended by the electric eld that is between charged parallel plates. The table below shows how the balancing voltage depends on the distance between the plates. - Graph the balancing voltage as a function of the plate separation With the manipulated variable on the horizontal axis. (title) - Calculate the slope of the graph and describe the physical quantity or quantities that this slope represents. - Using the slope, or another suitable averaging technique, determine the magnitude of the charge on the suspended mass. - Determine the balancing voltage required when the plates are separated by 55.0 mm. Clearly communicate your understanding of the physics principles that you are using to solve this question. You may communicate this understanding mathematically, graphically, andfor with written statements. Question 2 Describe the development of the quantum mechanical model of the atom. In your explanation, start with the Dalton model of the atom and finish with the quantum mechanical model of the atom. For each of the five models include . a description of the significant experiments . the reason the observations of the experiment showed a new model was needed . a description of how scientists changed each model into the next model