Aperson is walking outdoors on a cold day when the temperature is -20°c. he is breathing at the rate of 16 breaths per minute, and each time he breathes in he inhales 0.0050 m3 of air. at what rate does he lose heat from breathing if the air in his lungs is heated to body temperature (37°c) before it is exhaled? the specific heat of air is 1020 j/kg ∙ k and the density of air is 1.29 kg/m3.