What is the formula linking pressure in solids (P), force (F), and area (A)?
P = pressure (Pa)
F = force (N)
A = area (m2)
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What is a fluid?
A fluid is a substance in which the particles are free to move.
A fluid is any liquid or gas.
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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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What is the equation linking pressure in fluids (Δp), depth (Δh), gravitational field strength (g), and density (ρ)?
Δp = pressure due to fluid (Pa)
ρ = density of fluid (kgm-3)
g = gravitational field strength (ms-2)
Δh = depth of fluid (m)
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