Fermi function. (a) under equilibrium conditions, (i) what is the probability of an electron state being occupied if it is located at the fermi level? at t = 0 k, what is the probability of an electron state being occupied if it located (ii) above the fermi level (iii) below the fermi level (b) plot fermi function for ef=0.5 ev and show the probability of an occupied state δe above ef is equal to the probability of an empty state δe below ef so f(ef +δe) = 1 - f(ef -δe). (c) if the probability of a state being empty at ev - 1kt is equal to the probability of a state being filled at ev - 4kt, where is the fermi level located? (d) if ef is positioned at ec, determine the probability of finding electrons in states ec+3kt (a numerical answer is required). repeat your calculation for the case when ef is positioned at ev and the energy level is located at ev-3kt
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Physics, 21.06.2019 19:40
Wo audio speakers are placed on a vertical rail. speaker a is placed at head-level while speaker b is place at some variable height, \delta yδy, above speaker a. both speakers receive simultaneous input from a sine-wave generator so the speakers each produce a pure sinusoidal sound wave with a wavelength of 0.531 meters. calculate the lowest height that speaker b can be placed above speaker a to produce a minimum of sound heard by person standing \delta x = 7.86δx=7.86 meters directly in front of speaker a.
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Physics, 21.06.2019 19:40
An ideal spring has a spring constant (force constant) of 2500 n/m, is stretched 4.0 cm, how much elastic potential energy does it possess? (a) 3j (b) 0.00j (c) 1j (d) 2j (e) 4j
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Physics, 22.06.2019 11:00
Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?
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Physics, 22.06.2019 18:00
Avector of magnitude 2 cannot be added to a vector of magnitude 3 so that the magnitude of the resultant is a. zero b. 1 c. 3 d. 5 e. 7
Answers: 1
Fermi function. (a) under equilibrium conditions, (i) what is the probability of an electron state b...
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