A 50. g pendulum swinging back and forth has a speed of 3.0 m/s at a height of 0.30 m. Determine the total mechanical energy of the pendulum. 220 J 0.37 J 0.22 J 370 J

Diamond will scratch quartz. true or false

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.

Which describes an object in projectile motion? check all that apply. a.gravity acts to pull the object downb. the object moves in a straight path. c.the forward velocity of the object is 0 m/s. d.the object’s inertia carries it forward. e.the path of the object is curved.