Heat Transfer Questions & Answers | |
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Well no, the heat flux emitted if black is $\sigma T_G^4$ because $T_G$ is the temperature of the matter. It doesn't matter if the matter is black or gray. 0.5 point bonus.
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This is beyond the material you have to cover for the midterm exam. We'll see this in the second half of the course. 0.5 point bonus boost.
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Both equations reflect the exact same physics and assumptions but they are expressed differently. We didn't derive the integral form, we simply obtained it from the differential form. Also, avoid breaking lines for every sentence. In English, you should only break a line between paragraphs, with each paragraph expressing an idea. Because one question is one idea, it should be expressed within one paragraph.
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Yes, consider those as two independent fins and sum up the heat transfer.
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Well choose a value that will be reasonable in this case. Either the base temperature of the fin, or the average between the fin base temperature and the fluid temperature far from the fin. 0.5 point bonus.
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$\pi$ |