What did rutherford discover that thomson did not understand?

a) that an atom's electrons took up as much space as its nucleus

b)that atoms were too small to affect alpha particles

c) that electrons were much smaller than alpha particles

d) hat most of an atom's mass was packed in a central nucleus

D) That most of an atom's mass was packed in a central nucleus.

Explanation:

smooth muscle is composed of involuntary muscles found within the walls of organs and structures such as the esophagus, stomach, intestines, and blood vessels. those muscles push materials like food or blood through organs. unlike skeletal muscle, smooth muscle can never be under your control.

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