The production of x-radiation that occurs in an x-ray tube requires the movement of negatively charged particlestraveling from one side of the tube to the other. this movement of charges must occur in: a. vaccuum. b. a tungsten gas environment. c. an aqueous medium. d. any condition that exists inside the x-ray tube, including a nonvacuum.

A

Explanation: In order to generate X ray we need to strongly accelerate the electrons to do that it is necessary a vacuum tube. It applied a high voltage difference to obtain huge kinetic energy to the electrons before impacting to a catode in the other side. The strng electron colision  produces a hard  Xray radiation of bremsstrahlung .  In the X ray spectrum there are also characteristic emission lines from each target. The target to impact the electrons can be tungsten, copper, molibdeno etc. In order to keep high speed of the electron before the colision to the target  we need to conduct this process under vacuum conditions.

the area between the graph and the t axis

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.