alleryStart learning →A blackbody of area 200 square cm at 127 degrees Celsius radiates for one minute. How much energy is emitted?
AAbout 174 J
BAbout 1742 J
CAbout 17420 J
DAbout 100 J
Answer & Solution
Correct answer: B. About 1742 J
Q = sigma A t T^4 = 5.67e-8 x 0.02 x 60 x 400^4, which is about 1742 J.
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