Assignmen By what percentage would be pressure drop in an artery as the blood (density 1.05×10kg/m²) enters a region which has been narrowed down by an atherosclerotic plaque to a cross-sectional area only one-fifth of normal? Assume that the narrowing occures within a very short distance, and hence any change in elevation will be negligible. Assume that the blood pressure in the normal artery is 100 mm Hg, and that flow speed in this normal region is 0.12m/s.
• Designate the normal artery are region 1, and the narrow portion as region 2.