🔋college physics i – introduction review

key term - Bernoulli’s principle

Definition

Bernoulli’s principle states that in a steady flow, the sum of all forms of mechanical energy in a fluid along a streamline is constant. This means that an increase in the speed of the fluid occurs simultaneously with a decrease in pressure or potential energy.

5 Must Know Facts For Your Next Test

  1. Bernoulli’s principle is derived from the conservation of energy for flowing fluids.
  2. It explains why airplane wings generate lift; faster airflow over the top surface reduces pressure, creating lift.
  3. The principle can be mathematically expressed as $P + \frac{1}{2}\rho v^2 + \rho gh = \text{constant}$ where $P$ is pressure, $\rho$ is density, $v$ is velocity, and $h$ is height.
  4. Applications include fluid flow in pipes, blood flow in arteries, and functioning of carburetors.
  5. In real-life applications, factors like viscosity and turbulence may cause deviations from ideal Bernoulli behavior.

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