Suppose that the build-up of fatty tissue on the wall of an artery decreased the radius of the artery from 10.0 mm to 7.22 mm. To maintain identical blood flow, by what numerical factor does the pressure differential provided by the heart increase compared to a normal artery (no fatty tissue build-up)?

Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.