The surface area of an adult human is about \(1.8 \mathrm{~m}^{2}\). Suppose \(\mathrm{BIO}\) a person with a skin temperature of \(34^{\circ} \mathrm{C}\) is standing with bare skin in a room where the air is \(25^{\circ} \mathrm{C}\) but the walls are \(17^{\circ} \mathrm{C}\).

a. There is a "dead-air" layer next to your skin that acts as insulation. If the dead-air layer is \(5.0 \mathrm{~mm}\) thick, what is the person's rate of heat loss by conduction?

b. What is the person's net radiation loss to the walls? The emissivity of skin is 0.97 .

c. Does conduction or radiation contribute more to the total rate of energy loss?

d. If the person is metabolizing food at a rate of \(155 \mathrm{~W}\), does the person feel comfortable, chilly, or too warm?