What kind of rays are produced when a metal, such as tungsten, is bombarded with electrons moving with very high velocities?
a. x-rays
b. gamma rays
c. cathode rays
d. infrared rays

x-rays

Explanation: When the electrons from the filament strike the tungsten target, x-rays are created photons are created if they either hit a target nucleus directly (rare) or their path takes them close to the nucleus. If a high- speed electron hits the nucleus of a target atom, all its kinetic energy is transformed into a single x-ray photon.

the function of the protein macromolecule is to move things in and out of the cell and transport other molecules in the body. there are many functions of proteins. they are the basic building blocks of living things and are responsible for the growth and repair of body cells and tissues.

explanation:

i'd say that the moon rock is about 2.2 billion years old.