Grå flate: ε=0,60,A=2,0m2,T=500K\varepsilon = 0{,}60, A = 2{,}0 m^2, T = 500 Kε=0,60,A=2,0m2,T=500K. Finn strålt effekt.
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P=εσAT4=0,60⋅5,67⋅10−8⋅2,0⋅(500)4=0,60⋅5,67⋅10−8⋅2,0⋅6,25⋅1010=4,25⋅103WP = \varepsilon \sigma AT^4 = 0{,}60\cdot 5{,}67\cdot 10^{-8}\cdot 2{,}0\cdot (500)^4 = 0{,}60\cdot 5{,}67\cdot 10^{-8}\cdot 2{,}0\cdot 6{,}25\cdot 10^{10} = 4{,}25\cdot 10^3 WP=εσAT4=0,60⋅5,67⋅10−8⋅2,0⋅(500)4=0,60⋅5,67⋅10−8⋅2,0⋅6,25⋅1010=4,25⋅103W.
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