Figure Q3 shows the air flow through a duct with a diameter of 0.3 m. Calculate the mass flow of air if the air velocity through the duct is 8 m/s at the temperature of 24 °C and gauge pressure of 60 kPa. Take the atmospheric pressure as 101.3 kPa. 300 mm

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Properties of Fluids

The term fluid represents a type of substance that can easily change its shape under any external pressure/force and can flow. Fluids can acquire any shape in which it is stored and can resist normal stresses but cannot resist shear stress in rest condition. Whenever external shear stress is applied to fluids, it starts to flow. The fluids may be liquid or gas. Example- water, air, etc.