Asked by kelsey
Assuming your skin temperature is 37.2°C and the temperature of your surroundings is 20.5°C, determine the length of time required for you to radiate away the energy gained by eating a 265 Calorie ice cream cone. Let the emmissivity of your skin be 0.915 and its area be 1.22 m2.
? hours
? hours
Answers
Answered by
drwls
Convert temperatures T1 and T2 to Kelvin and use the Stefan-Boltzmann law. Radiated power - absorbed power = (Area)*(sigma)*emissivity)*(T2^4 - T1^4)
"sigma" is the Stefan-Boltzmann constant, which you will need to look up.
"sigma" is the Stefan-Boltzmann constant, which you will need to look up.
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