5. are produced in a vacuum tube when electrons traveling at the speed of light (186,000 miles per second) collide into a target made of specific materials, such as tungsten.

Question 1(multiple choice worth 2 points) in order to be considered work, the components that must be present are • a force and a movement in the same direction as the force an action which causes movement and an opposite reaction an action which causes no movement or reaction a force and a movement in the opposite direction of the force