P2207_fall10_lecture32 - A of the container from the gas...

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Lecture 32
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Today: Pressure Measuring pressure Pressure variation with depth
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The atmospheric pressure from the air above you presses against all parts of your body. What is the force against every square-inch of your skin? A. 8 N (~1.9 lb) B. 16.5 N (~3.7 lb) C. 33 N (~7.5 lb) D. 66 N (~15 lb) E. 132 N (~30 lb)
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A. (A) B. (B) C. (C) D. All pressures are the same Three identical water-filled containers are shown below. Which pressure sensor reads the largest pressure ? (All sensors are at the same position in the container) (A) (B) (C)
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F net = ? A. 1 atm * A B. 2 atm * A C. 3 atm * A D. 2 atm / A E. 3 atm / A A container is filled with gas at a pressure of p in =3 atm . The outside is a atmospheric pressure. What is the net force on the top surface of area
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Unformatted text preview: A of the container from the gas pressures? p in = 3 atm A hollow hemisphere is placed against a flat circular plate of the same radius r . The air in between is pumped out so that atmospheric pressure P holds them together. The net force on the outer surface of the hemisphere due to atmospheric pressure is: A. less than B. the same as C. greater than the net force due to atmospheric pressure on the flat plate. Two hollow hemispheres of radius r are placed against each other. The air in between is pumped out so that atmospheric pressure P pushes them together . If two people tug on them, what force much each exert to pull them apart? F F F = ? A. r 2 p / 2 B. r 2 p C. 2 r 2 p D. 4 r 3 p / 3 E. r 3 p...
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This note was uploaded on 12/18/2011 for the course PHYS 2207 at Cornell University (Engineering School).

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P2207_fall10_lecture32 - A of the container from the gas...

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