Forces in Fluids. Pressure : the amount of force exerted per unit of area. P=F/A A pascal (Pa) is the unit of pressure 1 Pa = 1N/m 2. Fluid. a substance that assumes the shape of its container. Is a liquid a fluid? YES. Is a solid a fluid? NO. Is a gas a fluid? YES.
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A pascal (Pa) is the unit of pressure
1 Pa = 1N/m2
a substance that assumes the shape of its container
Is a liquid a fluid?
Is a solid a fluid?
Is a gas a fluid?
Density of Fluid
The volume of a gas increases with increasing temperature provided the pressure does not change.
P T V
If you decrease the volume of a container of gas the pressure of the gas will increase provided the temperature does not change
P T V
Shaking the bottle increases the pressure.
Opening the bottle quickly decreases the pressure.
This causes a rapid increase in volume.