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A Blacksmith Is Flattening a Steel Plate That Measures

Question 22

Multiple Choice

A blacksmith is flattening a steel plate that measures A blacksmith is flattening a steel plate that measures .He has heated the plate to 900 K.If the emissivity of the plate is 0.75,what is the total rate at which it radiates energy? The Stefan-Boltzmann constant is 5.670 × 10<sup>-8</sup> W/m<sup>2</sup> • K<sup>4</sup>.Ignore any heat it receives from the surroundings. A) 360 W B) 760 W C) 790 W D) 850 W E) 880 W .He has heated the plate to 900 K.If the emissivity of the plate is 0.75,what is the total rate at which it radiates energy? The Stefan-Boltzmann constant is 5.670 × 10-8 W/m2 • K4.Ignore any heat it receives from the surroundings.


A) 360 W
B) 760 W
C) 790 W
D) 850 W
E) 880 W

Correct Answer:

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