Industrial Maintenance — Essay Sample Today among the most popular jobs there are service technicians, machinists and mechanics.
Explaining devices and experiments The photoelectric tube we studied in class last week has some unusual properties as a circuit element, including behaving for some voltages as if it had a negative resistance". On our IV curve for the phototube we actually had positive current at a slightly negative voltage.
What is the difference between what is happening to the conduction electrons in the photoelectric tube as compared to what happens to them in a resistor? Describe briefly Rutherford's experiment probing the structure of the atom and explain why the result was a surprise.
A researcher tells you that within a 10 second window, a single electron will hit the television screen you are viewing. Sure enough, there is a flash within that time window. The researcher told you nothing else, though, and so you don't know the experimental setup being used.
You only know that she has a gizmo that allows the release electrons at long time intervals. Do you know if that electron went through a two-slit interference apparatus or if it was simply shot at the screen? Explain how you arrive at your answer. An electron and a proton of identical energy are incident on the same potential barrier.
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If the probability of transmission for the electron greater than, less than, or equal to the transmission probability of the proton? Explain how you arrived at your answer. What is the difference between a conductor and an insulator? Give experimental evidence for the descriptions that you give, and try to account for these descriptions using a microscopic model of the material.
Based on the model we have been describing in class, how could you account for the difference between a conductor and a resistor How, if at all, can you account for the different conductivity values of different types of metals?
Does copper conduct better, or does iron? How do you know? Explain how you think about the situation. When observed, it seems to shine in only one color. Is there a filter in the glass or is it a property of the device?
Explain how you could account for the observation, based on what you know about the device. Use your everyday physics thinking on this one, if you don't know the formal response We have talked about the LED and we have talked about polarization of metals. Compare and contrast the two.
Compare the "current" electrons in the case of the LED and the polarized metal. What are the similarities and what are the differences?
Explain in as much detail as possible. You know that the electron is in one of those two energy levels, but you don't know which.
In making a measurement of the particle's location one afternoon in the lab, you find the following: What do you expect to find this time? Often, wave functions and potential barriers are shown on the same graph the text does this a lot.
Is it possible for a particle described by a wave function whose crest is LESS than the height of a square potential barrier to be transmitted through a barrier?
In class we discussed the probability of finding a particle in one or the other well, when two wells are placed close to each other.
If we placed TWO particles in the two wells at the lowest possible energy and assumed that they don't interact with each other, what then?make a good essay. You may want to ask yourself the following questions. 1. What do these words mean: Content, Organization, Language Usage, Grammar Usage, and Mechanics?
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