Pressure, Pascal's law, Bernoulli's principle, viscosity, surface tension.
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Q1 · Mechanical Properties of Fluids (1st PUC) · EASY
A horizontal pipe of varying cross-section carries water. At a point where the area is 20 cm², the velocity is 2 m/s and pressure is 4000 Pa. At another point where area is 10 cm², the pressure is approximately: (density of water = 1000 kg/m³)
Q2 · Mechanical Properties of Fluids (1st PUC) · HARD
A spherical ball of radius 2 mm and density 8000 kg/m³ falls through a liquid of density 1200 kg/m³ and coefficient of viscosity 1.8 N·s/m². The terminal velocity of the ball is approximately: (g = 10 m/s²)