The system in the figure below is at 20 degree Celsius. If the atmospheric pressure is 101.325 kPa and the absolute pressure at the bottom of the tank is 237 kPa, (a) what is the specific gravity of fluid X? (b) What is the gage pressure at the bottom of the tank (kPa)?

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Fluid Materials

In general terms, anything that flows can be termed as a fluid. In other words, a fluid is any substance that cannot resist shear forces and deforms continuously under the application of external shear forces. Fluid materials differ completely from solid materials such as metals and alloys. For instance, if we consider two infinitesimally small cross-sectional areas of fluid materials and solid materials, and apply shear forces to these elements, both the elements will undergo deformation. Upon releasing the shear force, the element of the solid materials will regain its original orientation, but the element of the fluid materials will keep on deforming continuously under the action of the shear force.