Answer to Question #153511 in Physics for Alex

Question

The normal human body has an average core or interior temperature of 37C∘. At a skin temperature of 34 C∘, how much heat is removed through conduction? Assume a thermal conductivity of unperfused (i.e. bloodless) tissue of 18 (Cal x cm)/(m^2 x hr x C), 3 cm thickness of the tissue between the interior and the exterior of the body, and 1.5 m2 total surface area of the human body. 

Choices:

• 36 Cal/hr
• 29 Cal/hr
• 27 Cal/hr
• 18 Cal/hr
• 22.5 Cal/hr

Answer 1

$q=\frac{Q}{t}=\lambda\cdot\frac{\Delta T}{\Delta x}\cdot A=18\cdot\frac{37-34}{3}\cdot1.5=27(Cal/hr)$ . Answer