A-Level H2 Physics Practice Questions - Singapore-Cambridge GCE A-Level Higher 2 (H2) Physics (Syllabus 9749) Exam

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The pressure p of a gas is given by p = ⅓ ρ⟨c²⟩, where ρ is density and ⟨c²⟩ is mean-square speed. What are the base SI units of pressure derived from this expression?

kg m s⁻² kg m⁻³ s⁻² kg m⁻² s⁻¹ kg m⁻¹ s⁻²

Correct Answer:

kg m⁻¹ s⁻²

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