Question

The pressure of water inside the closed pipe is 3 x10⁵ N/m². This pressure reduces to 2 x10⁵ N/m² on opening the value of the pipe. Calculate the speed of water flowing through the pipe. (Density of water = 1000 kg/m³)

Answer 1

Correct answer = 14.14 m/s 

Explaination::

Given::  p₁ = 3 × 10⁵ Pa, v₁ = 0, p₂ = 2 × 10⁵ Pa,
ρ = 10³ kg/m³

Assuming the potential head to be zero, i.e., the pipe to be horizontal, the Bernoulli equation is