Find the gravitational force between a particle of mass m and a solid cylinder of radjus R and mass M a distance z apart.

What is the fate of the electrons that interact with a specimen in an electron microscope?

Which explanation describes the forces involved for a person to walk down the sidewalk? a. the person's feet push backward on the sidewalk; the sidewalk pushes backward on the person. b. the person's feet push forward on the sidewalk; the sidewalk does not push on the person. c. the person's feet push backward on the sidewalk; the sidewalk pushes forward on the person. d. the person's feet push forward on the sidewalk; the sidewalk pushes forward on the person.

What is a good example of instantaneous speed