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Learning Goal: To practice Tactics Box 14.1 Hydrostatics. Part C In problems about liquids in hydrostatic equilibrium, you often need to find the pressure at some point in the liquid. This Tactics Box outlines a set of rules for thinking about such hydrostatic problems. Assume patm = 1.00 atm. What is the gas pressure peas? Express your answer in pascals to three significant figures. Figure > View Available Hint(s) 1 of 1 Pgas Pgas = 9.8 Pa A Submit Previous Answers B X Incorrect: Try Again: 2 attempts remaining

Learning Goal: To practice Tactics Box 14.1 Hydrostatics. Part C In problems about liquids in hydrostatic equilibrium, you often need to find the pressure at some point in the liquid. This Tactics Box outlines a set of rules for thinking about such hydrostatic problems. Assume patm = 1.00 atm. What is the gas pressure peas? Express your answer in pascals to three significant figures. Figure > View Available Hint(s) 1 of 1 Pgas Pgas = 9.8 Pa A Submit Previous Answers B X Incorrect: Try Again: 2 attempts remaining

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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I Review | Constants Learning Goal: To practice Tactics Box 14.1 Hydrostatics. TACTICS BOX 14.1 Hydrostatics In problems about liquids in hydrostatic equilibrium, you often need to find the pressure at some point in the liquid. This Tactics Box outlines a set of rules for thinking about such hydrostatic problems. 1. Draw a picture. Show open surfaces, pistons, boundaries, and other features that affect the pressure. Include height and area measurements and fluid densities. Identify the points at which you need to find the pressure. These objects make up the system; the environment is everything else. 2. Determine the pressure at the various surfaces. Figure 1 of 1 • For a surface open to the air, po = Patm, usually 1 atm. • For a surface covered by a gas, po = Pgas- • For a closed surface, p = F/A, where F is the force the surface, such as a piston, exerts on the fluid and A is the area of the surface. 3. Use horizontal lines. Pressure in a connected fluid is the same at any point along a horizontal line. 4. Allow for gauge pressure. Pressure gauges read pe =p-1 atm. 5. Use the hydrostatic pressure equation: p = po + pgh, where p is the density of the fluid, g is the free-fall acceleration, and h is the height of the fluid. Peas A Use these rules to work out the following problem: A U-shaped tube is connected to a box at one end and open to the air at the other end. The box is full of gas at pressure Pgas, and the tube is filled with mercury of density 1.36x104 kg/m . When the liquid in the tube reaches static equilibrium, the mercury column is h1 = 15.0 cm high in the left arm and h2 = 6.00 cm high in the right arm, as shown in the figure.(Figure 1) What is the gas pressure pgas inside the box? h2 mercury
Transcribed Image Text:I Review | Constants Learning Goal: To practice Tactics Box 14.1 Hydrostatics. TACTICS BOX 14.1 Hydrostatics In problems about liquids in hydrostatic equilibrium, you often need to find the pressure at some point in the liquid. This Tactics Box outlines a set of rules for thinking about such hydrostatic problems. 1. Draw a picture. Show open surfaces, pistons, boundaries, and other features that affect the pressure. Include height and area measurements and fluid densities. Identify the points at which you need to find the pressure. These objects make up the system; the environment is everything else. 2. Determine the pressure at the various surfaces. Figure 1 of 1 • For a surface open to the air, po = Patm, usually 1 atm. • For a surface covered by a gas, po = Pgas- • For a closed surface, p = F/A, where F is the force the surface, such as a piston, exerts on the fluid and A is the area of the surface. 3. Use horizontal lines. Pressure in a connected fluid is the same at any point along a horizontal line. 4. Allow for gauge pressure. Pressure gauges read pe =p-1 atm. 5. Use the hydrostatic pressure equation: p = po + pgh, where p is the density of the fluid, g is the free-fall acceleration, and h is the height of the fluid. Peas A Use these rules to work out the following problem: A U-shaped tube is connected to a box at one end and open to the air at the other end. The box is full of gas at pressure Pgas, and the tube is filled with mercury of density 1.36x104 kg/m . When the liquid in the tube reaches static equilibrium, the mercury column is h1 = 15.0 cm high in the left arm and h2 = 6.00 cm high in the right arm, as shown in the figure.(Figure 1) What is the gas pressure pgas inside the box? h2 mercury
I Review| Constants Learning Goal: To practice Tactics Box 14.1 Hydrostatics. Part C In problems about liquids in hydrostatic equilibrium, you often need to find the pressure at some point in the liquid. This Tactics Box outlines a set of rules for thinking about such hydrostatic problems. Assume patm = 1.00 atm. What is the gas pressure pgas? Express your answer in pascals to three significant figures. Figure 1 of 1 • View Available Hint(s) ? Pgas 9.8 Pgas Pa A Submit Previous Answers В X Incorrect; Try Again; 2 attempts remaining mercury Provide Feedback Next >
Transcribed Image Text:I Review| Constants Learning Goal: To practice Tactics Box 14.1 Hydrostatics. Part C In problems about liquids in hydrostatic equilibrium, you often need to find the pressure at some point in the liquid. This Tactics Box outlines a set of rules for thinking about such hydrostatic problems. Assume patm = 1.00 atm. What is the gas pressure pgas? Express your answer in pascals to three significant figures. Figure 1 of 1 • View Available Hint(s) ? Pgas 9.8 Pgas Pa A Submit Previous Answers В X Incorrect; Try Again; 2 attempts remaining mercury Provide Feedback Next >
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