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GR8677 #46
Problem
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Statistical Mechanics$\Rightarrow$}Blackbody Radiation

Recall the $T^4$ law

$\sigma \propto T^4,
$

where $\sigma$ is the energy density.

Apply that law. $10=T_1^4$ and $x=2^4 T_1^4$, where $mW$ is the units. Compare the two to get $x=2^4 \times 10 mW =160 mW$. This is choice (E).

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 livieratos2011-11-07 10:58:03 i think it would be best if you just wrote dE/dt proportional to $T^4$ since σ is the symbol for the constant in the law and people might get confused... just a suggestion :)Reply to this comment

LaTeX syntax supported through dollar sign wrappers $, ex.,$\alpha^2_0$produces $\alpha^2_0$. type this... to get...$\int_0^\infty$$\int_0^\infty$$\partial$$\partial$$\Rightarrow$$\Rightarrow$$\ddot{x},\dot{x}$$\ddot{x},\dot{x}$$\sqrt{z}$$\sqrt{z}$$\langle my \rangle$$\langle my \rangle$$\left( abacadabra \right)_{me}$$\left( abacadabra \right)_{me}$$\vec{E}$$\vec{E}$$\frac{a}{b}\$ $\frac{a}{b}$