EM waves and blackbody radiation question

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SUMMARY

The discussion centers on calculating the power radiated by a rectangular metal plate, treated as a blackbody, at a temperature of 1,433 K. The relevant equation is derived from the Stefan-Boltzmann law, expressed as P = σAT^4, where σ is the Stefan-Boltzmann constant (5.670373(21)×10−8 W m−2 K−4) and A is the surface area of the plate. The surface area is calculated as 0.20 m * 0.30 m, resulting in 0.06 m². Substituting the values into the equation allows for the determination of the power radiated.

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Homework Statement


A rectangular metal plate measures 0.20 m long and 0.3 m wide. The plate is heated to a temperature of 1,433 K by passing a current through it. Assuming that it behaves like a blackbody, how much power does the plate radiate under these conditions?


Homework Equations


P∝T^4 (power is proportional to the temperature raised to the fourth power)
Only relevant equation I can find in my textbook so far. I don't where to factor in the lengths in the question.

The Attempt at a Solution


Ive tried all sorts of combos of the equation i gave, but all of them are wrong. I have the same question with different numbers and the answer to that one but still don't know how to get it.ψ
 
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Ok you might not heard about stefan Boltzmann law
P=σAT4.(where A is surface area:smile:)
Where σ is called stefan Boltzmann constant its value is 5.670373(21)×10−8 W m−2 K−4.
Now find it it is easy.
 

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