3–17.A manometer is an example of forcesin equilibrium.The forces thatbalance each other are the1.2.3.4.force exerted by the atmosphereand the force exerted by theliquid inside the closedcontainerforce exerted by the gas insidethe closed container plus theweight of the liquid on oneside of the tube, and the forceexerted by the atmosphere plusthe weight of the liquid in theother side of the tubeforce exerted by the steam inthe steam line and the weightof a column of liquidforce exerted by the gas insidethe closed container and theweight of part of the liquid inthe tube3–18.What instruments areinterchangeable as pressure–measuring devices?1.Aneroid barometer and mercurialbarometer2.Schrader gauge and manometer3.Spring scale and steel yard4.Bourdon gauge and diaphragm–type pressure gauge3–19.Hydrostatic pressure is thepressure exerted by1.gas in motion2.gas at rest3.liquid at rest4.liquid in motion3–20.Density is defined in terms of1.pressure and volume2.weight and distance3.pressure and area4.weight and volume3–21.The pipes in figure 3A are filledwith water.Pipe AB is vertical;pipe CB is horizontal; pipe EDpoints downward at an angle.Thepoint of greatest pressure is atpoint1. A2. B3. C4. D3–22.The density of lead isapproximately how many timesgreater than the density of water?1. 52. 73. 94. 113–23.Which of the following is a truestatement concerning the pressureof water on a submerged submarine?1.2.3.4.The pressure is equal on thetop and on the bottomThe pressure is greater on thetop than on the bottomThe pressure is greater on thebottom than on the topThere is pressure only on thetop24
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