Asked by Morgan
What is the total power, or radiant flux, (in megawatts) of a spherical object of temperature 873 K and radius 7 meters, if we assume that it radiates like a perfect blackbody? (To get an answer in megawatts, take your answer in watts and divide by a million=1x106.)
Answers
Answered by
Elena
Radiant emittance R
Power P
Area A=π•r^2
R=P/A
Stefan-Boltzmann law R=σ•T^4
Stefan-Boltzmann constant σ =5.67•10^-8.
P=R•A= σ•T^4• π•r^2=5.07•10^6 W =5.07 MW
Power P
Area A=π•r^2
R=P/A
Stefan-Boltzmann law R=σ•T^4
Stefan-Boltzmann constant σ =5.67•10^-8.
P=R•A= σ•T^4• π•r^2=5.07•10^6 W =5.07 MW
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