A student travels on a school bus in the middle of winter from home to school. A net energy loss occurs from the student’s body during the 15-minute ride to school due to electromagnetic radiation. The school bus temperature is 68.0 °F. The student’s skin temperature is 91.4 °F. Note: Skin emissivity is 0.90, and the surface area of the student is 1.90 m2.
What is the rate of net energy transfer (power)?
What is the total net energy transfer (Q) during the 15-minute bus ride?
