3. A 1m³ container is filled with 0.12 m³ of granite, 0.15m³ of sand, and 0.2m³ of 25°C water, the rest of the volume is air with density of 1.15. Find the overall specific volume and density. kg Given: Vcontainer = 1m³ Vgranite = 0.12m³ Vsand = 0.15m³ Vwater = 0.2m³ Vair = 0.53m³ Required: Vtotal =? Ptotal =? Air Properties of Selected Solids at 25°C Substance (kg/m²) Asphalt 2120 Brick, common 1800 3250 Carbon, diamond Carbon, graphite Coal Concrete Class, plate Glass, wool Granite Ice (UC) Paper Plexiglass Polystyrene Polyvinyl chloride Rubber, soft Sand, dry Salt, rock Silicon Snow, firm Wood, hard (oak) Wood, soft (pine) 2000-2500 1200-1500 2200 2500 20 2750 917 700 1180 920 1380 1100 1500 2100-2500 2330 560 720 510 C₂ (kJ/kg-K) 0.92 0.84 0.51 0.61 1.26 0.88 0.80 0.66 0.89 2.04 1.2 1.44 2.3 0.96 1.67 0.8 0.92 0.70 2.1 1.26 1.38
Fluid Pressure
The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.
Gauge Pressure
Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.
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