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18 Nov 2019

I would really love help with this project!! Thank you so much

An avid reader of Incropera and DeWitt, you propose to use a shape factor to quickly relate surface temperatures to heat flux within the Kapton film. You recognize in your book that case 5 seems the most appropriate for this application. You want to make sure that the wires are spaced far enough apart such that this shape factor is valid, so you quickly code up a 2D steady state finite difference code to check. You assume a thermal conductivity of Kapton to be about 0.46 W/m-K. This particular customer wants the wires to be at 25 C and the surface to be at 20 C. The thickness of the Kapton film is 1 mm, and the diameter of the copper wire is 0.5 mm. Derive the finite difference equations for the 4 cases below: a. Internal node at constant temperature b. Internal node without heat generation c. Boundary nodes at constant temperature (both edges and corners!) d. Adiabatic boundary nodes (both edges and corners!)

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For which system below would quantum effects be leastnoticeable?

-The collision of two N₂ molecules in a gas, whichchanges the rotational energy of both

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We have dealt with two different ensembles, canonical andmicrocanonical. Which of the following statements is inaccurateregarding these ensembles?

-The canonical ensemble is always considered as a subset of alarger reservoir, which acts as the surroundings.

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-The microcanonical ensemble is a smaller subset of microstatesof the canonical ensemble.

-The canonical ensemble is generally more useful than themicrocanonical for chemical processes.

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-It tells us the numerical order of the energy levels for agiven system.

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Consider a cup-carrier from your favorite take-out restaurant.The carrier can hold four cups, and you have to place two cups (onelarge, one small) into the carrier, with no preference forposition. How many microstates can you form with two cups in thefour spaces?

-12

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Boltzmann's definition of the entropy was a breakthrough inunderstanding statistical thermodynamics. What is the bestdefinition of Boltzmann's entropy?

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-The rotational quantum number

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-We assumed that the vibrational energy can be expressed asv?_e.

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-We assumed that the separations are relatively small, due tohigh temperature or lower vibrational constant.

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increasing the temperature.

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