If the body's surface temperature is 36 ∘c , what is the net rate of heat loss on a chilly 4 ∘c day? all skin, regardless of color, is effectively black in the infrared where the radiation occurs, so use an emissivity of 0.95.

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.