GREPhysics.NET: GR8677 #46

GR8677 #46

Problem

GREPhysics.NET Official Solution

Alternate Solutions

Statistical Mechanics $\Rightarrow$ }Blackbody Radiation

Recall the $T^4$ law

$\sigma \propto T^4,<br />$

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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Comments

livieratos
2011-11-07 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 :)

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