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A thin square steel plate 10 cm on a sid...

A thin square steel plate 10 cm on a side is heated in a black smith's forge to temperature of `800^@C`. If the emissivity is 0.60, what is the total rate of radiation of energy ?

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To find the total rate of radiation of energy from the thin square steel plate, we can use Stefan-Boltzmann Law, which states that the power radiated by a black body is proportional to the fourth power of its absolute temperature. The formula for the power radiated is given by: \[ P = \sigma \cdot E \cdot A \cdot T^4 \] Where: - \( P \) = total power radiated (in watts) - \( \sigma \) = Stefan-Boltzmann constant \( \approx 5.67 \times 10^{-8} \, \text{W/m}^2\text{K}^4 \) - \( E \) = emissivity of the material (dimensionless) ...
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