Show that 2sinøcosø =sin2ø

An inclined plane wrapped around a metal shaft is a a. lever b. screw c. pulley d. wedge

How would a small bar magnet be oriented when placed at position x?

Aball with a mass of 275 g is dropped from rest, hits the floor and rebounds upward. if the ball hits the floor with a speed of 2.40 m/s and rebounds with a speed of 1.70 m/s, determine the following. (a) magnitude of the change in the ball's momentum (let up be in the positive direction.)