![subject](/tpl/images/cats/fizika.png)
Physics, 11.07.2019 00:10 melodeelathrom
Consider 3-dimensional electron gas system consisting of n-particles in volume v. one electron energy is given by 2m .
1) at, t=0 find the total energy of the system in terms of \varepsilon _f and n.
![ansver](/tpl/images/cats/User.png)
Answers: 2
Another question on Physics
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 00:20
Suppose that an electromagnetic wave which is linearly polarized along the x−axis is propagating in vacuum along the z−axis. the wave is incident on a conductor which is placed at z > 0 region of the space. the conductor has conductivity σ, magnetic permeability µ and electric permittivity ε. (a) find the characteristic time for the free charge density which dissipates at the conductor. (b) write the maxwell equations and derive the wave equation for a plane wave propagating in a conductor. (c) find the attenuation distance at which the incident amplitude reduces to e ^−1 of its initial value. (d) find the electric and magnetic fields inside the conductor. 8 (e) find the power loss per area of the incident electromagnetic wave at the surface of conductor.
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 14:20
4r-134a enters the condenser of a residential heat pump at 800 kpa and 50°c at a rate of 0.022 kg/s and leaves at 750 kpa subcooled by 3°c. the refrigerant enters the compressor at 200 kpa superheated by 4°c determine (a) the isentropic efficiency of the compressor, (b) the rate of heat supplied to the heated room, and (c) the cop of the heat pump. also, determine (d) the cop and rate of heat supplied to the heated room if this heat pump operated on the ideal vapor-compression cycle between the pressure limits of 200 and 800 kpa. (0.757, 4.37 kw, 5.12, 6.18, 3.91 kw)
Answers: 3
![question](/tpl/images/cats/fizika.png)
Physics, 23.06.2019 00:00
You are standing on a boat. which of the following strategies will make the boat start moving? a. pushing the mast b. throwing some cargo out of the boat c. pushing the front ofthe boat d. pushing another passenger
Answers: 3
![question](/tpl/images/cats/fizika.png)
Physics, 23.06.2019 00:30
What is the relationship between globular clusters and the milky way?
Answers: 1
You know the right answer?
Consider 3-dimensional electron gas system consisting of n-particles in volume v. one electron energ...
Questions
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 05.11.2020 18:10
![question](/tpl/images/cats/User.png)
SAT, 05.11.2020 18:10
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 05.11.2020 18:10
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 05.11.2020 18:10
![question](/tpl/images/cats/istoriya.png)
History, 05.11.2020 18:10
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 05.11.2020 18:10
![question](/tpl/images/cats/fizika.png)
Physics, 05.11.2020 18:10
![question](/tpl/images/cats/mat.png)
Mathematics, 05.11.2020 18:10
![question](/tpl/images/cats/istoriya.png)
History, 05.11.2020 18:10
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 05.11.2020 18:10
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 05.11.2020 18:10
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 05.11.2020 18:10