How many electrons does an aluminum atom have

How does the mass-energy equation e = mc2 relate to fission

An atom of an element has 38 electrons. What is also true of that atom? A. It has an atomic mass of 38. B. It has 38 protons. C. It has 38 neutrons. D. It bonds with 38 elements. I got B

Positive buoyancy used in a sentence

A wave with a short wave length will also have ... ?

What is the best description of a wave? A) a vibration that carries energy B) a disturbance that moves matter C) a medium disturbed by a vibration D) matter that is moved from one place to another

A falling back in mid air has what

What objects are often arranged by their properties

Which nuclei is not radioactive? A. Am-241 B. Mg-24 C. Pu-241 D. U-238

What is the method of charging used when you run a straw with fur

A man runs at a velocity of 6.2 m/s for 11.5 minutes. When going up and increasingly steep hill, he slows down at a constant rate of 0.25 m/s^2 and comes to a stop. How far did he run?