Question: If when nondimensionalizing the basic flow equations the pressure p is scaled by a reference pressure p0, instead of ( ρ0V0 )^2, the scaled momentum

If when nondimensionalizing the basic flow equations the pressure p is scaled by a reference pressure p0, instead of ( ρ0V0 )^2, the scaled momentum equation displays an additional dimensionless parameter. Derive the form of this parameter and show how for a perfect gas it relates to the Mach number.

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