(b) density and pressure

relationship between density, mass and volume (5.3)

density = mass / volume

ρ = m /V

investigate density using direct measurements of mass and volume (5.4)

relationship between pressure, force and area (5.5)

pressure = force / area

p = F / A

how does pressure at a point in a gas or liquid at rest act equally in all directions (5.6)

relationship for pressure difference, height, density and gravitational field strength

pressure difference = height × density × gravitational field strength

p = h × ρ × g