A-LevelPhysicsPhysical quantities and units9702/12 · Oct/Nov 2016 · Q21 Mark
The speed v of sound in a gas is given by the equation v = √(γP/ρ) where P is the pressure of the gas, ρ is its density and γ is a constant. What are the SI base units of γ?
Am⁻¹ s
Bm³ s⁻³
Cm⁻⁴ s⁻⁴
Dno units
✓ Correct answer
D: no units
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