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Difference between Internal Energy and Enthalpy

CALCULATE THE...

Question

CALCULATE THE TEMPERATURE (IN KELVIN) AT WHICH A PERFECT BLACK BODY RADIATES ENERGY AT THE RATE OF 5.67 W/cm2.

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Solution

$r a t e o f e n e r g y r a d i a t e s i s g i e v n b y : E = σ T^{4} w h e r e σ i s t h e s t e f a n s b o l t z m a n c o n s \tan t T^{4} = \frac{E}{σ} = \frac{5.67 \times 10^{- 4}}{5.67 \times 10^{- 8}} = 10^{4} T = 10 K$

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