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categoryالهندسة الميكانيكية schoolبكالوريوس event_available2026-07-15

السؤال

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An N95 mask has a loss factor . If the air outside the mask is at and K = 0.8 p01 = 100 kPa To₁ = 288 K and you draw air through the mask at 1. what are p₁, T₁, and M₁ 2. what are p2, T2, and M2 entering your lungs)? v₁ = 10 m/s the static conditions of the air entering the mask? the static conditions of the air exiting the mask (and 3. what is the force per area (D/A) the air exerts on the mask?

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