A) mass
B) energy
C) angular momentum
D) linear momentum
Correct Answer: B
Solution :
When an incompressible and non-viscous liquid (or gas) flows in stream-lined motion from one place to another, then at every point of its path the total energy per unit volume (pressure energy + kinetic energy + potential energy) is constant. That is, \[P+\frac{1}{2}\rho {{v}^{2}}+\rho gh=constant\] where P is pressure, \[\rho \] is density, g is gravity, v is velocity and h is height. Thus, Bernoullis theorem is in one way the principle of conservation of energy for a flowing liquid (or gas).
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