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What is the difference between open and closed fluid systems?
Open Systems: Exchange matter and energy with surroundings. Closed Systems: Do not exchange matter or energy with surroundings.
What is the difference between fluid statics and fluid dynamics?
Fluid Statics: Fluids at rest, hydrostatic pressure acts equally in all directions. Fluid Dynamics: Moving fluids, pressure can change with velocity (Bernoulli's Principle).
What happens when fluid density increases?
The buoyant force increases.
What happens when the area of a pipe decreases, according to the continuity equation?
The fluid velocity increases.
What happens when an object displaces more fluid?
The buoyant force on the object increases.
What happens to density when temperature increases?
Generally, density decreases.
What happens to density when pressure increases?
Generally, density increases.
How do you draw a free-body diagram?
1. Draw the object as a simple shape. 2. Draw arrows representing each force acting on the object. 3. Label each force clearly.