Abullet of mass m is fired through a wooden board of mass m and length l free to pivot about a fixed axis through its center. the bullet's initial velocity is v0 and its final velocity is 0.69 v0. the bullet moves in a straight line (perpendicular to the pivot axis) and hits the board at a point midway between the pivot and the end of the board. find the final angular velocity of the board about its center. express your answer in terms of the given quantities.

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.