If the object distance in the following picture were 8.0 m and the image distance were 2.0 m, what is the focal length? Answer options: 0.63m or 1.6m

Within a pendulum, as potential energy decreases, energy increases. a. heat b. kinetic c. frictional d. gravitational

How can you increase the strength of an electromagnet?

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.)