ENGG252 (DB225) Engineering Fluid Mechanics
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Water is compressed from 80 kPa to 2400 kPa at constant temperature. The initial density of water is 1000 kg/m and the isothermal compressibility of water is
The surface tension of soap water at 20
The difference between the energies of a flowing and stationary fluid per unit mass of the fluid is equal to
The specific gravity of a fluid is specified to be 0.85. The specific volume of this fluid is
The density of a fluid decreases by 10 percent at constant pressure when its temperature increases by 10 C. The coefficient of volume expansion of this fluid is
A viscometer constructed of two 30-cm-long concentric cylinders is used to measure the viscosity of a fluid. The outer diameter of the inner cylinder is 9 cm, and the gap between the two cylinders is 0.18 cm.
The inner cylinder is rotated at 250 rpm, and the torque is measured to be .155 N
A 1.04-mm-diameter glass tube is inserted into water at 20°C in a cup. The surface tension of water at 20 = 0.073 N/m. The contact angle can be taken as zero degrees. The capillary rise of water in the tube is
The speed of a spacecraft is given to be 1250 km/h in atmospheric air at 25 C. The Mach number of this flow is
The dynamic viscosity of air at 20 kg/m
An ideal gas flows in a pipe at 1010 and its molar mass is 44 kg/kmol. The pressure of the gas is
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