Radiation from the head is a major source of heat loss from the human body. Model a head as a 21-cm-diameter, 20-cm-tall cylinder with a flat top. If the body's surface temperature is 35 ∘C, what is the net rate of heat loss on a chilly 7 ∘C day? All skin, regardless of color, is effectively black in the infrared where the radiation occurs, so use an emissivity of 0.95.
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Physics, 22.06.2019 01:00, Mimix2k
15. give an example for some particles or waves that are moving faster than light in everyday life 16. what is a laser? 17. what is an oscilloscope? 18. what does it means practically that nothing is faster than light in vacuum? 19. what is vacuum?
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Radiation from the head is a major source of heat loss from the human body. Model a head as a 21-cm-...
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