Question
State Bernoulli's Theorem.

Answer

For an incompressible, non-viscous, irrotational liquid having streamlined flow, the sum of the pressure energy, kinetic energy and poential energy per unit mass is constant.

$\frac{\text{P}}{\rho}+\frac{\text{V}^2}{2}+\text{gh}=\text{constant}$

But for a steady flow Bernoulli's equation can be simplified as,

$\text{P}_1+\frac12\rho\text{V}^2_1=\text{P}_2+\frac12\rho\text{V}^2_2$

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