This simulation is a simplified version of an experiment done by Robert Milliken in the early...
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This simulation is a simplified version of an experiment done by Robert Milliken in the early 1900s. Hoping to learn more about charge, Milliken sprayed slightly ionized oil droplets into an electric field (created by Parallel Plates) and made observations of the droplets. When the voltage is zero and the run button is pressed, the drop will fall due to the force of gravity. It will reach a terminal velocity as it falls. This terminal velocity can be used to determine the mass of the drop. Use the equation: mass = kv to determine the mass of the particle. The value of k in this simulation is 4.086 x 10-17 kg s/m. Once the terminal velocity is recorded and the mass calculated, increase the voltage between the plates. This will produce an upward field and an upward force on the positive droplets. If the upward force of the electric field is equal to the downward force of gravity, and the drag force is zero, the particle will not accelerate. To be sure that the lack of acceleration is not related to drag forces, the velocity must also be zero as well as the acceleration in order to be sure that the two forces are balanced. Increase and decrease the voltage (use the left/right arrow keys) until both the acceleration and velocity are at zero. The velocity may not stay at exactly zero, but find the voltage that has the velocity changing most slowly as it passes v = 0. Use the methods discussed above to ultimately determine the charge on ten (or more) different oil-drops. This simulation is a simplified version of an experiment done by Robert Milliken in the early 1900s. Hoping to learn more about charge, Milliken sprayed slightly ionized oil droplets into an electric field (created by Parallel Plates) and made observations of the droplets. When the voltage is zero and the run button is pressed, the drop will fall due to the force of gravity. It will reach a terminal velocity as it falls. This terminal velocity can be used to determine the mass of the drop. Use the equation: mass = kv to determine the mass of the particle. The value of k in this simulation is 4.086 x 10-17 kg s/m. Once the terminal velocity is recorded and the mass calculated, increase the voltage between the plates. This will produce an upward field and an upward force on the positive droplets. If the upward force of the electric field is equal to the downward force of gravity, and the drag force is zero, the particle will not accelerate. To be sure that the lack of acceleration is not related to drag forces, the velocity must also be zero as well as the acceleration in order to be sure that the two forces are balanced. Increase and decrease the voltage (use the left/right arrow keys) until both the acceleration and velocity are at zero. The velocity may not stay at exactly zero, but find the voltage that has the velocity changing most slowly as it passes v = 0. Use the methods discussed above to ultimately determine the charge on ten (or more) different oil-drops.
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This text is describing a simulation of the famous Millikan oil drop experiment The purpose of the original experiment was to determine the charge of an electron and it involved measuring the terminal ... View the full answer
Related Book For
Principles Of Managerial Finance
ISBN: 978-0136119463
13th Edition
Authors: Lawrence J. Gitman, Chad J. Zutter
Posted Date:
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