Water flows through a horizontal pipe of varying cross-section. At a point where the radius is 0.01 m, the velocity is 4 m/s. What is the velocity at a point where the radius is 0.02 m?
Q1. Water flows through a horizontal pipe of varying cross-section. At a point where the radius is 0.01 m, the velocity is 4 m/s. What is the velocity at a point where the radius is 0.02 m?
Answer: 1 m/s
Explanation: A₁v₁ = A₂v₂; v₂ = v₁ * (A₁/A₂) = 4 m/s * (0.01/0.02)² = 1 m/s; correct application of equation of continuity.