Q3. When air is filled in the tube. Why does it become stiff?
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When you halve the volume of a gas, the pressure doubles. When you fill a tire, you're squeezing more air into a set volume of space. Since the aircannot expand outward, its pressure increases, pressing the tire tightly against the rim.
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When you halve the volume of a gas, the pressure doubles. ... Since the air cannot expand outward, its pressure increases, pressing the tire tightly against the rim.
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