Having no clean clothes and nothing better to do, you(Asurface = 1.8 m2) stand i

Question

Having no clean clothes and nothing better to do, you(Asurface = 1.8 m2) stand in the middle of the living room (Tenv=295K) for 24.0 hours. Your skin temperature remains a constant 306K and your Mediterranean complexion has an emissivity of 0.9. i) What is your net rate of radiative thermal transfer ? Be sure to indicate whether heat is gained or lost. ii) What is the net thermal energy radiated by you during the 24 hour span? iii) During this time, you swallow a 0.30 kg kielbasa sausage (Tsausage=275K, csausage=3450 J/kg.C). How much heat does the sausage gain as it is warmed up to 37.0.C in your digestive tract?

Explanation / Answer

answer power emitted by th4e person P =??A(T4-T'4) ? = stephen boltzmann constant ? = emissitivity A = surface area of the personbody T = temparature of skin T' = room temparature pluggingin the given values in the above equaion we can solve forP Thermal energy radiated from te person E = P * 24hr * 3600 sec / hr Heat absorbed by a 0.30 kg sausage be Q Q = m*c * ?T m = mass of the suasage c = specific heat of suasage ?T = final to intial temparaturedifference of suasage pluggin in given values , we can solve for aboveequations .

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