P15_020 - 20. The gauge pressure you can produce is 3 p =...

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20. The gauge pressure you can produce is p = ρgh = ³ 1000 kg / m 3 ´ ( 9 . 8m / s 2 ) (4 . 0 × 10 2 m) 1 . 01 × 10 5 Pa / atm = 3 . 9 × 10 3 atm where the minus sign indicates that the pressure inside your lung is less than the outside pressure.
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