合肥工業(yè)大學大學物理考試試題(編輯修改稿)
2025-07-04 17:47 本頁面
【文章內(nèi)容簡介】 heat during one plete cycle.11. One mole of a monatomic ideal gas undergoes the cycle shown in the Fig. temperature at state A is 300K. (a). calculate the temperature of state B and C. (b). what is the change in internal energy of the gas between state A and state B? ()(c). the work done by the gas of the whole cycle .(d). the net heat added to the gas during one plete cycle. V(m3)P(Pa)C13100300AB 12. The motion of the electrons in metals is similar to the motion of molecules in the ideal gases. Its distribution function of speed is not Maxwell’s curve but given by. (0≤v≤vF)(vF v ∞) the possible maximum speed vF is called Fermi speed. (a) plot the distribution curve qualitatively. (b) Express the coefficient A in terms of vF. (c) Find its average speed vavg. 13. Two containers are at the same temperature. The first contains gas with pressure, molecular mass , and rms speed. The second contains gas with pressure, molecular mass , and average speed . Find the mass ratio . 14. In a quasistatic process of the ideal gas, dW=PdV and dEint=nCvdT. From the 1st law of thermodynamics show that the change of entropy .Where n is the number of moles, Cv is the molar specific heat of the gas at constant vol
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