Question

Alveoli are tiny sacs of air in the lung. Calculate the uncertainty in the speed of an oxygen molecule (mass = 5.3 × 10-26 kg) trapped within an alveoli of diameter 135 μm. Express your answer to 2 significant figures. Hint: The maximum uncertainty in the position of the molecule (Δq) is given by the diameter of the sac.

Answer 1

Answer:

Uncertainty in position Δx= Diameter of Alveoli

=5×10

−10

m

ΔxΔv≥

4πm

h

Δv≥

4×3.14×5.3×10

−26

×5×10

−10

6.626×10

−34

Δv≈1.99m/sec.

Explanation:

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