A uniform rod of mass m has very tiny lead balls, each of mass m, welded to each end. If the rod hangs in empty space, and a force F is applied to the rod, consider three cases: A) The force is applied to the upper lead ball; B) The force is applied halfway between the upper lead ball and the center of mass of the system; C) The force is applied at the center of mass of the system.

The coulomb's law explains which of the following? select all the force between two charged objects is inversely proportional to the charge on each object. the force between two charged objects is directly proportional to the charge on each object. the force between two charged objects is directly proportional to the distance separating them. the force between two charged objects is inversely proportional to the square of the distance separat coulomb's law is similar to newton's 2nd law. if the force between two objects is f and the charge on both objects is doubled, the new force between the would now be 2f. if the force between two objects is 2f and the distance separating them is doubled, the new force between the objects would now o the be zf.

The slope of a velocity time graph over any interval of time gives the during that interval

If the radius of curvature of the cornea is 0.75 cm when the eye is focusing on an object 36.0 cm from the cornea vertex and the indexes of refraction are as described before, what is the distance from the cornea vertex to the retina? express your answer to two significant