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

ernest21 2019-08-23 02:01:51	I agree. This is a quite complete answer. The whole point is to observe the results of the inelastic collisions in the electron current. www cricbuzz live score Reply to this comment
joshuaprice153 2019-08-09 06:22:19	I\'m impressed. You\'re truly well informed and very intelligent. You wrote something that people could understand and made the subject intriguing for everyone. I\'m saving this for future use. electrician Tallahassee Reply to this comment
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 :) Reply to this comment

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I agree. This is a quite complete answer. The whole point is to observe the results of the inelastic collisions in the electron current. www cricbuzz live score

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