House Temperature After Gas Supply Stops · CAP 2011 #4
Physics · thermodynamics
Problem
The gas supply to your physics professor's house suddenly stops due to a gas line failure. It is winter and the temperature outside is −5°C and constant. Assuming all the doors and windows remain closed, which of these graphs best describes how the temperature in the house changes with time after the gas supply stops?
[Figure: Four graphs (a), (b), (c), (d) showing Temperature (°C) vs Time (hours), each starting at about 20°C and showing different decay patterns toward -5°C over 30 hours]