When this quantity is zero, Burgers’ equation reduces to a quasi-linear hyperbolic differential equation. With pipe length and flow rate, this quantity appears in the numerator of Poiseuille’s (“pwah-ZEY’s”) law for calculating (10[1])pressure changes. The Navier-Stokes equations reduce to the Euler (“OIL-er”) equations when this quantity is zero. (-5[1])Stokes’ law states (-5[1])drag is proportional (10[1])to radius, velocity, and this quantity. (10[2])The Reynolds number is the ratio of inertial forces to forces due to this quantity. (-5[1])For a non-Newtonian fluid like cornstarch slurry, this quantity depends on applied stress. (10[1])This quantity equals zero in superfluids. (10[1])For 10 points, name this quantity that measures a fluid's resistance to flow. (10[2])■END■