Question: Find a dimensionless product relating the torque (ML 2 T 2 ) produced by an automobile engine, the engine's rotation rate (T 1 ),

Find a dimensionless product relating the torque τ (ML²T^–2) produced by an automobile engine, the engine's rotation rate Ψ(T^–1), the volume V of air displaced by the engine, and the air density ρ .

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