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Question

Alveoli are tiny sacs in the lungs whose average diameter is 5×105m. Consider an oxygen molecule (5.3×1026kg) trapped within a sac. Calculate uncertainty in the velocity of oxygen molecule.

Solution
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Uncertainty in position Δx= Diameter of Alveoli
=5×1010m
ΔxΔvh4πm
Δv6.626×10344×3.14×5.3×1026×5×1010
Δv1.99m/sec.

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