Heat Transfer Questions & Answers  
Question by Student 201428239
Professor, I have a question about Assignment 3 of Question #5 (c). I don't know the answer about (c). So I don't know if my answer is correct. I got 450K for (c). Is it correct??
04.26.19
There's a reason why this is not given. Think about the problem more.
Question by Student 201428239
Professor, I have a question about Assignment 3 of Q5. Should I calculate T of SUN?? I already calcualted with respect to radiation H-T and I got 381.4K.... I think this is not true in r eal case. Is there anything that I missed??
Explain to us how you can calculate the sun's temperature.
Question by Student 201428239
I calculated the T of sun like this. $$q_{\rm sun}^”={\sigma}{T_{sun}}^4$$ And I continued like this. $$q_{\rm gen}={\sigma}A({T_{Bo}}^4-{T_{sun}}^4)$$ A is equal to $4{\pi}{r_3}^2$ Is there anything that I missed?
How can you find the temperature of the sun? I can't follow you. I see no equation $T_{\rm sun}=..$.
Question by Student 201312147
Professor, I have a question assignment#3 Q5(a). To solve this problem, we have to need T of Sun?? or can we solve to using $q^{”}_{rad} = q{”}_{gen}$??
You don't have to find $T_{\rm sun}$ if it's not needed to find the answer to the problem.
Question by Student 201527136
Professor, I have question about assignment#5 Q1. In class, You said that power and viscous dissipation are same. But the answers of power and viscous dissipation are different. Why they are different?
04.29.19
You should be able to explain this on your own.
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$\pi$