A hiker becomes stuck at the peak of a tall mountain on a completely clear, but...

 

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A hiker becomes stuck at the peak of a tall mountain on a completely clear, but windy night. There is no cover of rocks or trees, so the hiker is essentially completely exposed to the sky all around. Assume that the sky temperature is the same as that in deep space (about 3 K). The heat transfer coefficient of the wind over the surface of hiker's clothing is 27 W/ (m2.K) Including clothing, the hiker has a surface area of 1.7 m The temperature at the surface of the hiker's thin clothing is 24.4 C The air temperature is 7.7 C The emmisivity of the hiker's clothing is 0.3. In units of Watts, what is the heat loss from the hiker owing to radiation? A hiker becomes stuck at the peak of a tall mountain on a completely clear, but windy night. There is no cover of rocks or trees, so the hiker is essentially completely exposed to the sky all around. Assume that the sky temperature is the same as that in deep space (about 3 K). The heat transfer coefficient of the wind over the surface of hiker's clothing is 27 W/ (m2.K) Including clothing, the hiker has a surface area of 1.7 m The temperature at the surface of the hiker's thin clothing is 24.4 C The air temperature is 7.7 C The emmisivity of the hiker's clothing is 0.3. In units of Watts, what is the heat loss from the hiker owing to radiation?

Answer rating: 100% (QA)

To calculate the heat loss from the hiker due to radiation we can use the StefanBoltzm... View the full answer