Which describes how to correct farsightedness? Use a convex lens to move the image formed by the eye forward so it hits the retina. Use a concave lens to move the image formed by the eye forward so it hits the retina. Use a convex lens to move the image formed by the eye backward so it hits the retina. Use a concave lens to move the image formed by the eye backward so it hits the retina.

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

Asap time is ! best answer gets compose at least one well-developed paragraph on the following: define the term concurrent powers, and give an example of a concurrent power of government.

As you are trying to move a heavy box of mass m, you realize that it is too heavy for you to lift by yourself. there is no one around to , so you attach an ideal pulley to the box and a massless rope to the ceiling, which you wrap around the pulley. you pull up on the rope to lift the box. use g for the magnitude of the acceleration due to gravity and neglect friction forces. once you have pulled hard enough to start the box moving upward, what is the magnitude f of the upward force you must apply to the rope to start raising the box with constant velocity? express the magnitude of the force in terms of m, the mass of the box.