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A cubical block of mass 1.0kg and edge 5...

A cubical block of mass `1.0kg` and edge `5.0cm` is heated to `227^(@)C` . It is kept in an evacuated chamber maintained at `27^(@)C` . Assming that the block emits radiation like a blackbody, find the rate at which the temperature of the block will decreases. Specific heat capacity of the material of the block is `400Jkg^(-1)K^(-1)` .

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To solve the problem, we will follow these steps: ### Step 1: Understand the problem We have a cubical block of mass \( m = 1.0 \, \text{kg} \) and edge length \( 5.0 \, \text{cm} \) that is heated to \( 227^\circ C \) and placed in an evacuated chamber at \( 27^\circ C \). We need to find the rate at which the temperature of the block decreases, assuming it emits radiation like a black body. ### Step 2: Convert temperatures to Kelvin To use the Stefan-Boltzmann law, we need to convert the temperatures from Celsius to Kelvin: - \( T = 227^\circ C = 227 + 273 = 500 \, K \) ...
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DC PANDEY ENGLISH-CALORIMETRY AND HEAT TRANSFER-Medical entrance s gallery
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