A mercury thermometer measures temperature by measuring the volume expansion of a fixed mass of liquid mercury due to a change in density as
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- A small solid ball is released from rest while fully submerged in a liquid and then its kinetic energy is measured when it has moved 4.10 cm in the liquid (if it moves). The figure gives the results after many liquids are used: The kinetic energy K is plotted versus the liquid density plig, and Kg = 1.70 J sets the scale on the vertical axis. What is the volume of the ball in m3? K, 1 3. Pliq (g/cm³) K (J)arrow_forwardA vessel of cylindrical shape of 50 cm diameter and 75 cm height, contains 4 kg of gas. The pressure gauge mounted on the vessel indicate 620 mm of Hg above atmosphere. If the borometer reading is 760 mm of Hg, calculate the absolute pressure of gas in bar. Also determine the density and specific volume of the 5. gas. (1.84 bar, 27.21 kg/m³, 0.036 m³/kg)arrow_forwardT F The specific weight of a fluid is the product of the fluid's density and the acceleration due to gravity. Stronger surface tension leads to higher capillary rise. Absolute pressures are frequently negative. If the pressure of fluid drops below the vapor pressure of that fluid at that temperature, the fluid will cavitate. F F T F F Density can be measured in lb;/ft° in the English system of units. For a hydrostatic incompressible fluid, pressure is independent of depth. A fluid with a high bulk modulus of elasticity is more difficult to compress than one with a low bulk modulus of elasticity. Viscosity is caused, in part, by the surface tension within a fluid. A fluid can resist an applied shear stress by deforming. Pressure increases faster with depth in less dense fluids than in more dense fluids. T F F F F Farrow_forward
- The pressure at 9.85m depth in a fluid is 102,482Pa. Calculate the density of the fluid and present the answer in Pascal with accuracy up to one decimal place. Consider 1 atm = 101325 Pa. Assume the value of gravity to be 9.8 m/s2.arrow_forwardThe Louisiana Superdome has an interior volume of 125 million ft3, covered by a 440,000 ft² roof. On a particular day, the interior air pressure gave a manometer reading of 19 inches mercury (pHg = 13.6 g/cm³). Local atmospheric pressure is 102 kPa. 1. kg Calculate the mass of the air inside, assuming an average temperature of 20 °C. 2. kN Calculate the net force applied to the roof by the interior/exterior air (do not account for the weight of the roof). Assume the roof is flat.arrow_forwardA pressure gauge fitted on the side of a tank filled with liquid reads 50 kPa and 100 kPa at heights of 5 m and 10 m.What is the approximate density of the liquid (in kg/m)? (take g = 10)..arrow_forward
- As shown in the diagram, the state of helium gas is changed in such a way that its PV graph is a straight line segment with volume Vo increases to yVo and pressure Po increases to xPo where x and y are arbitrary constants. During this process the total heat transferred to the gas is equal to the heat necessary to double the absolute temperature of the gas at constant volume. What is the maximum ratio for the volume increase? xP, P. Voarrow_forwardFor a certain ideal gas R = 25.8 ft.lb /lb °R and k =1.09a. What are the values of cp and cv?b. What mass of this gas would occupy a volume of 15 cu ft at 75 psia and 80 °F?c. If 30 Btu are transferred to this gas at constant volume in (b), what are the resultingtemperature and pressure? include the diagramarrow_forwardA car tyre has a gauge pressure of 1.9 bar. Determine it's absolute pressure in mmHg, assuming the atmospheric pressure is 1.013 bar. Give your answer to 4 significant figures.arrow_forward
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