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CAIE A-Level Physics AS 4.3.3 Derive From the Definitions of Pressure and Density the Equation Questions

Explain upthrust as the upward force exerted by a fluid on an immersed object.

Syllabus
2028–2030
Course
Physics 9702
Level
AS

Exam points

  • Explain upthrust as the upward force exerted by a fluid on an immersed object.

CAIE A-Level Physics AS 4.3.3 Derive From the Definitions of Pressure and Density the Equation Questions question 1

[Maximum number: 1]

The derivation of the pressure equation Δp=ρgΔh\Delta p=\rho g \Delta h uses a number of relationships between quantities.

Which relationship is not used in the derivation of this equation?

A

density = mass  volume =\frac{\text { mass }}{\text { volume }}

B

potential energy = mass × acceleration of free fall × height

C

pressure = force  area =\frac{\text { force }}{\text { area }}

D

weight = mass × acceleration of free fall

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