Question 610903: When air is pumped into a tire, the pressure required varies inversely as the volume of the air. If the pressure is 30lb per square inch when the volume is 140 cubic inches, find the pressure when the volume is 100 cubic inches?
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! When air is pumped into a tire, the pressure required varies inversely as the volume of the air. If the pressure is 30lb per square inch when the volume is 140 cubic inches, find the pressure when the volume is 100 cubic inches?
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That's not true. With a fixed volume, such as a tire, the pressure varies directly with the amount of air.
Tires don't change from 140 to 100 cubic inches.
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Here's the fantasy land solution, tho.
PV = k
30*140 = P*100
P = 42 psi
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