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Physics (AS & A Level) · May / June 2021 · Paper 13 · Question 15

9702Density and pressure

The derivation of the pressure equation Δp = ρgΔh uses a number of relationships between quantities. Which relationship is not used in the derivation of this equation?

  1. Adensity = mass/volume
  2. Bpotential energy = mass × acceleration of free fall × height
  3. Cpressure = force/area
  4. Dweight = mass × acceleration of free fall

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Correct answer: B. potential energy = mass × acceleration of free fall × height

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