At this very moment you are sitting in a room that is 10.5m * 10.5m * 3.0m . How
ID: 1587212 • Letter: A
Question
At this very moment you are sitting in a room that is 10.5m * 10.5m * 3.0m . How much heat would have to removed to turn all the air in this room into liquid? Assume the air is transfered into a giant ballon beforehand so that it may collapse while it cools. At right is a table of canstants, some of which are relevant.
2/ An unhealthy diet can cause blockages in the blood vessels that restrict the flow of blood. If the blockage gets severe enough it can lead to collapse of the blood vessel. Explain why this is using concepts of fluid physics covered in this class. ( using the equation v1A1=v2A2)
Cp for air 29.1 J/mol?K Cv for air 20.8 J/mol/K c for liquid air 2042 J/kg/K Lv for air 199,000 J/Kg Lf for air 26,000 J/Kg Boiling point of air -196o C Melting point of air -210o C Atomic mass of air 28 g/mol Density of air at STP 1.28 Kg/m3 Room temperature 200 CExplanation / Answer
From continuity equation
A1V1 = A2V2
as the blockage increases area decreases
if the area decreases from above equation V increases
If the V increases drastically it leads to collapse of blood vessels
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