What is a fluid?
A fluid is a substance in which the particles are free to move. So a fluid is any liquid or gas.
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What is the formula for pressure?
pressure = force / area
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What are the units of pressure?
Pascals (Pa)
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Explain how gas inside a container exerts pressure on the container.
The particles of gas are moving randomly and collide with the walls of the container. This force exerts a pressure on the container wall.
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How would you describe pressure in words?
Pressure is a measure of the force per unit of area.
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