A student travels on a school bus in the middle of winter from home to school. The school bus temperature is 288 K. The student's skin temperature is 312 K. Determine the net energy transfer from the stuent's body during the 21 minute ride to school due to electromagnetic radiation.

Note: Skin emissivity is 0.90 and the surface area of the student is 1.50 m^2. Stephan's Constant σ = 5.6696x10-8 W/m2K4

(Hint: First find Pnet, then find Energy transfer Q. Round Q to the nearest Joule.

Question

A student travels on a school bus in the middle of winter from home to school.  The school bus temperature is 288 K.  The student's skin temperature is 312 K.  Determine the net energy transfer from the stuent's body during the 21 minute ride to school due to electromagnetic radiation.

Note:  Skin emissivity is 0.90 and the surface area of the student is 1.50 m^2. Stephan's Constant σ = 5.6696x10-8 W/m2K4

(Hint:  First find Pnet, then find Energy transfer Q.  Round Q to the nearest Joule.