In the vapour phase P4. Assume a linear relationship between SVP and temperature for this range, i.e. constant slope. Tutorial 12 Session 2 Q1. When air is free to flow under a house, any hot air will flow out and cooler air will flow under the floor. When there are no clouds heat is radiated into space thus cooling the earth.
Clouds reflect radiation back.
An electric fan does not cool air. If feels cooler only in the airstream because the moving air increases the rate of evapouration from the skin. Metals have a larger thermal conductivity than wood and can more easily transfer heat to the hand. This is much smaller than the 230W needed P5. Power lost by conduction through wall, roof and windows.