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 pressure changes. The Navier-Stokes equations reduce to the Euler (“OIL-er”) equations when this quantity (10[1])is zero. (10[1])Stokes’ law states drag is proportional to radius, (10[1])velocity, and this quantity. The Reynolds number is the ratio of inertial forces to forces due to this quantity. (10[1])For a non-Newtonian fluid like cornstarch slurry, (10[1])this quantity depends on applied (10[1])stress. This quantity equals zero in superfluids. For 10 points, name this quantity that measures a fluid's resistance to flow. ■END■