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